More in Trip planning & itineraries.
Plan a ferry-free Hong Kong island-hopping day with ChatGPT
PartialEvidence: Article or interviewPosted Last checked
ChatGPT's first Hong Kong island plans were wrong, including a bus to a ferry-only island, before pushback got a working route.
How to use this
- Tap Copy prompt.
- Open ChatGPT.
- Paste it into the message box.
- Send it, then read the answer before acting on it.
New to this? What's a prompt?
A prompt is the message you send to the AI tool. Copy the one on this page, put your own details where it asks, and read the answer before you act on it.
Prompt
These are the person's own words, as shared in the source.
I’d like to visit at least three different islands in Hong Kong in one day. However, I’m not good on boats and get seasick easily, so I’d like an itinerary that doesn’t include ferries.
Try this in:
Sends the Original prompt shown above. ChatGPT and Grok open with it filled in, and ChatGPT may send it straight away. Gemini and Claude open empty, so we copy the prompt for you to paste. Every button also copies it.
Opens in a new tab. We don't see what you send.
These links are only a shortcut. We're not affiliated with OpenAI, Google, Anthropic or xAI, and your results may not match the source.
Optional stronger version
Our rewrite with extra checks. The poster didn't test it.
Before you start, ask me 1–3 short questions about the details below and wait for my answers. Once I've answered, confirm the plan in one line and run the whole task start to finish. Goal: Plan a one-day route that visits several islands using only ground transport, with no boats. Questions to ask me first: - Which city or region, and which day of the week? - Where are you starting from, and by what time must you be back? - What do you enjoy: food, sights, walking, shopping? Inputs (fill in or confirm): - City or region: [CITY] - Start point and return time: [START / RETURN TIME] - Interests and budget: [INTERESTS / BUDGET] Rules: - Count only separate islands, not neighborhoods of the same island. - For every leg, name the exact transport (train line, bus number or bridge) and confirm it doesn't need a boat. - If a place can only be reached by ferry, leave it out and say so. - Say when something needs checking, like opening hours or bus routes, and don't guess. - Order the stops so the route flows without doubling back too much. Checkpoint: Before the full itinerary, list the islands you picked and how each one connects by land, and wait for my OK. If you get stuck: If you can't find enough islands reachable without boats, tell me instead of stretching the rules. Verify before you finish: Re-check every leg for boats and every stop for being a separate island. Output: A timed itinerary with transport for each leg, one food stop and a backup option. Done when: I have a day plan that really works with no ferries.
Customize the stronger version
Answer these questions and we'll put your answers into the stronger version. The original prompt above stays exactly as published.
Your prompt
Before you start, ask me 1–3 short questions about the details below and wait for my answers. Once I've answered, confirm the plan in one line and run the whole task start to finish. Goal: Plan a one-day route that visits several islands using only ground transport, with no boats. Questions to ask me first: - Which city or region, and which day of the week? - Where are you starting from, and by what time must you be back? - What do you enjoy: food, sights, walking, shopping? Inputs (fill in or confirm): - City or region: [CITY] - Start point and return time: [START / RETURN TIME] - Interests and budget: [INTERESTS / BUDGET] Rules: - Count only separate islands, not neighborhoods of the same island. - For every leg, name the exact transport (train line, bus number or bridge) and confirm it doesn't need a boat. - If a place can only be reached by ferry, leave it out and say so. - Say when something needs checking, like opening hours or bus routes, and don't guess. - Order the stops so the route flows without doubling back too much. Checkpoint: Before the full itinerary, list the islands you picked and how each one connects by land, and wait for my OK. If you get stuck: If you can't find enough islands reachable without boats, tell me instead of stretching the rules. Verify before you finish: Re-check every leg for boats and every stop for being a separate island. Output: A timed itinerary with transport for each leg, one food stop and a backup option. Done when: I have a day plan that really works with no ferries.
Scroll to see the whole prompt. Your answers show in green.
3 blanks are still empty: City or region; Start point and return time; Interests and budget. They'll stay in brackets in your prompt, so the chat tool may ask you about them.
What you type stays in this browser tab. We don't send it or save it, and it's gone when you leave the page.
AI tool
Outcome
CNN Travel's Lilit Marcus, who gets seasick, asked the free ChatGPT website, used without signing in, for a one-day plan to visit at least three Hong Kong islands without ferries. The first few rounds were pretty bad: it suggested Chek Lap Kok, the man-made island that is just the airport, then two neighborhoods on Lantau Island as if they were separate islands, then a bus to Lamma Island, which is only reachable by ferry. After more pushback, it suggested Lantau, Tsing Yi and Hong Kong Island, all reachable without boats. Hits included the Tian Tan Buddha, lunch at the Po Lin Monastery canteen and a route that flowed naturally on one subway line. The Tsing Yi stop was anticlimactic, which Marcus says was partly due to the strict rules.
Evidence: Article or interviewA newsletter, journalist or interview account of what happened.
Known limitations
PartialThe source says it only partly worked, or had a significant problem a person had to deal with.
What went wrong: It took several rounds of pushback: ChatGPT first counted the airport island and neighborhoods as islands and suggested a bus to a ferry-only island.
Source
- Posted
- by Lilit Marcus (CNN Travel)
- Last checked
- Method:
- How we verify
https://www.cnn.com/travel/ai-chatgpt-llms-travel-planning
Context: CNN tested the free ChatGPT website without signing in. Double-check transport links before you go.
More in Trip planning & itineraries
Fact-check a Vienna trip plan from ChatGPT, Claude and Gemini
Checked against official sites, ChatGPT made no confirmed error in 21 facts, while Claude got 4 of 29 wrong and Gemini 6 of 15.
PartialChatGPT +2Evidence: Article or interviewView CasePlan a family weekend in Hershey with Gemini Spark
Gemini Spark planned David Pierce's family weekend in Hershey using details from email, but failed to book the Airbnb.
PartialGemini SparkEvidence: Article or interviewView CasePlan a week in Japan on 200,000 credit card points with ChatGPT and Gemini
ChatGPT and Gemini built a decent Japan itinerary, but ChatGPT invented a Chase-to-ANA transfer and used an outdated Hyatt rate.
PartialChatGPT +1Evidence: Article or interviewView CasePlan an Adirondacks hiking trip with Claude connectors
Lance Whitney used Claude with TripAdvisor, AllTrails, Viator and Spotify connectors to map hotels, trails and guides near Mount Marcy.
WorkedClaudeEvidence: Screenshots or logsBeginner-friendlyView CasePlan a 'Goonies'-themed Pacific Northwest road trip with ChatGPT
ChatGPT listed 'Goonies' sites but agreed to every add-on and didn't keep the days realistic. A coworker and Reddit fixed the plan.
PartialChatGPTEvidence: Article or interviewView CasePlan a 24-hour family trip to Charlotte with ChatGPT
ChatGPT planned Veronica Davis's family trip to Charlotte. The hotel and dinner were hits, but the brunch pick was a wrong turn.
PartialChatGPTEvidence: Shown on videoView Case
Similar cases
Plan a flexible beach day with an infant in Goa by voice with Gemini
Gemini planned a flexible North Goa beach day for a family with an infant, timing shade around the peak UV hours.
WorkedGeminiEvidence: Article or interviewBeginner-friendlyView CaseBuild a calm, step-by-step Osaka trip guide for a neurodivergent traveller with ChatGPT
ChatGPT helped a neurodivergent traveller build two calm, personal guidebooks for an Osaka trip that now feels possible.
WorkedChatGPTEvidence: Described by posterView CaseCompare 7-day Bali itineraries from ChatGPT and Grok
Asked for a 7-day solo Bali itinerary, the poster says ChatGPT beat Grok with tables and accurate cost breakdowns.
WorkedChatGPT +1Evidence: Described by posterView CaseCompare Disney World trip budgets from three AIs with ChatGPT, Gemini and Perplexity
ChatGPT budgeted $8,500 for a Disney trip but missed peak-date hotel costs; Gemini's $10,050 to $13,350 caught spring break.
WorkedChatGPT +2Evidence: Article or interviewBeginner-friendlyView CaseGet the lay of the land for a trip in half an hour and book a rental the same night with ChatGPT (partial)
ChatGPT helped book a Door County trip in half an hour but recommended two restaurants that had closed: partial.
PartialChatGPTEvidence: Article or interviewView Case

