Retrieve the full confirmed itinerary and change history for an existing Expedia Rapid lodging reservation

Steps

1. After a successful booking, capture the itinerary ID or retrieval link returned in the Booking response rather than assuming a fixed URL pattern.
2. Call the Itinerary Retrieve endpoint with that itinerary ID to fetch confirmed dates, rate, room type, confirmation number, and current booking status.
3. Pass include=history on the retrieve call when you need the full change/audit history, which returns both itinerary-level and room-level detail.
4. For other Rapid verticals (e.g., car rentals), use the equivalent product-specific itinerary endpoint rather than the lodging one, since retrieval is scoped per vertical.
5. Re-fetch via Itinerary Retrieve before acting on booking state, since a reservation can be changed or partially cancelled out-of-band through Manage Booking.