Plan your entire trip with ChatGPT — without ending up with an impossible itinerary.

Act as an experienced independent travel planner. Do not build the itinerary yet.

First, turn my trip into a clear planning brief.

Trip:
- Starting city: [CITY]
- Destination(s): [COUNTRY / CITIES]
- Dates: [DATES]
- Travelers: [NUMBER + AGES IF RELEVANT]
- Total budget: [AMOUNT + CURRENCY, SAY IF FLIGHTS ARE INCLUDED]
- Pace: [RELAXED / BALANCED / INTENSIVE]
- Interests: [LIST]
- Must-do experiences: [LIST]
- I want to avoid: [LIST]
- Food / dietary needs: [DETAILS]
- Transport preference: [DETAILS]
- Maximum hotel bases: [NUMBER]
- Other constraints: [DETAILS]

Return:
1. My non-negotiable constraints
2. My preferences, ranked by importance
3. What is still unclear
4. 5–8 questions that would materially improve the plan

Do not invent missing preferences. Ask before assuming.

Before you design the route, research the current practical facts that could break the trip.

For my dates and destinations, verify:
- intercity transport options and approximate travel time
- major attraction closure days / timed-entry requirements
- local public-transport constraints that matter to a visitor
- any major events or holidays likely to change crowds or opening hours
- which experiences should be reserved in advance

Prioritize official transport, attraction and tourism sources where possible.
For every time-sensitive fact, give me the source link and the date you checked it.
Clearly label anything you could not verify.

Using the verified facts and my trip brief, propose 3 route options:
A. Relaxed
B. Balanced
C. Maximum variety

For each option show:
- nights in each base
- transfer time between bases
- what I gain
- what I give up
- who this route is best for

Then recommend one route based strictly on my stated priorities. Do not choose the option with the most places by default.

Build the day-by-day itinerary for the route we selected.

For every day include:
- morning / lunch / afternoon / evening
- approximate travel time between areas
- one primary experience and optional extras
- which items require advance booking
- a nearby alternative if weather is bad
- a “drop this first if we are tired” item

Rules:
- group activities geographically
- do not schedule every hour
- protect realistic meal and transfer time
- do not place more than 2 major attractions in one half-day unless they are genuinely adjacent
- note any opening-hour assumption that still needs verification

Create a trip budget in [CURRENCY] for [NUMBER] travelers.

Use these categories:
- accommodation
- intercity transport
- local transport
- attractions / tickets
- food and drinks
- day trips
- shopping / optional
- contingency buffer

For each line show:
1. confirmed live price if we have one
2. otherwise a clearly labeled estimate or range
3. source when a current price was researched

Show low / realistic / comfortable total scenarios.
Do not present estimates as live prices.

For each day, suggest 2–3 food options near the area where we will already be.

For every option include:
- why it fits my preferences
- approximate price level
- cuisine / signature dish
- distance or travel time from the day plan
- whether reservation is advisable
- a backup nearby

Use current web information for restaurants that may have changed. Do not claim current opening hours or availability unless verified.

Red-team this travel plan.

Assume I am about to book it and your job is to find what could make me regret the plan.

Check for:
- unrealistic transfer timing
- too many activities in one area or day
- attraction closure days
- duplicate experiences
- unnecessary hotel changes
- expensive choices with weak value
- restaurants too far from the route
- missing reservation requirements
- weather-sensitive days with no backup
- budget items we probably forgot

Return:
1. Critical problems — fix before booking
2. Medium problems — worth improving
3. Nice-to-have optimizations
4. A revised itinerary only where a change is genuinely needed

Do not change things merely to produce a different answer.

You are my travel-planning copilot. Help me build a realistic, enjoyable trip, not the maximum possible number of attractions.

My trip:
[PASTE DATES, DESTINATIONS, TRAVELERS, BUDGET, PACE, INTERESTS, MUST-DOS, THINGS TO AVOID, FOOD NEEDS, TRANSPORT PREFERENCES AND HOTEL LIMITS]

Work in phases and wait for my approval between major phases:
1. Clarify missing constraints
2. Research time-sensitive facts using current web sources
3. Offer 3 route architectures
4. Build the selected day-by-day plan
5. Add a transparent budget
6. Add food options that fit the geography of each day
7. Create a booking checklist ordered by urgency
8. Red-team the complete plan for timing, closures, cost and unnecessary complexity

Rules:
- distinguish verified current facts from estimates
- cite current sources for changing information
- prefer official sources for transport, entry rules and attraction hours
- never invent availability, prices or reservation status
- leave breathing room in each day
- optimize for my stated priorities, not for the number of places visited

At the end, give me a one-page “trip control sheet”: dates, hotel bases, transfers, reservations, budget, and the 5 things I should double-check before departure.