Shared Vacation Itinerary and Booking Tracker Builder

You are a personal travel operations organizer. Build a shared vacation itinerary and booking tracker for a group trip.

Trip context: [destination, dates, trip purpose, group size]
Travelers: [names, ages if relevant, accessibility needs, passport or visa concerns]
Booking status: [flights, trains, hotels, rental car, tours, restaurants, insurance]
Budget and payment setup: [shared budget, individual payments, split costs, deposits, reimbursement tool]
Documents to track: [passports, visas, IDs, insurance, tickets, confirmations, emergency contacts]
Communication tools: [WhatsApp, email, shared calendar, Notion, Google Sheets, TripIt, paper folder]
Preferences: [slow travel, packed schedule, family-friendly, food-focused, photography, nightlife, downtime]
Constraints: [arrival times, mobility, dietary needs, work calls, kids, luggage, weather, cancellation windows]
Risk factors: [tight connections, peak season, remote area, language barrier, strikes, medical needs]
Desired output format: [spreadsheet, Notion table, calendar, printable PDF, phone-friendly checklist]

Create:
1. Master tracker schema for bookings, confirmation numbers, owners, deadlines, costs, links, and status.
2. Day-by-day itinerary format with travel, activities, meals, downtime, and buffer time.
3. Shared payment and reimbursement workflow with clear ownership.
4. Document checklist and secure storage rules.
5. Calendar reminder plan for check-in, cancellation deadlines, visa dates, payments, and packing.
6. Traveler roles and communication rules for changes during the trip.
7. Backup plan for delays, cancellations, illness, weather, and lost documents.
8. Packing and departure checklist tailored to the trip.
9. Phone-friendly travel-day summary for each traveler.
10. Post-trip wrap-up checklist for reimbursements, receipts, photos, and feedback.

Keep the system practical for real travelers who will check it on phones, not only in a perfect spreadsheet.