## Test Plan
- [ ] Open check-in guest info and confirm `Passport Nationality` is empty by default.
- [ ] Select passport nationality and verify `Country of Issuance` auto-populates.
- [ ] Add a child guest in booking flow and verify no incorrect `"title"` prefix appears.
- [ ] Verify photo is not selected by default in check-in guest info.
- [ ] In Trip Details, confirm duplicate enhancement entries are merged and expandable with guest bubbles.
- [ ] Compare Trip Details payment summary vs checkout payment summary for same reservation; confirm totals and per-cabin/per-guest values match.
- [ ] Verify labels (`Add-ons`, `Excursions`) and `VAT` visibility in guest-level breakdown.

iPhone, iPad, Apple Watch App

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