Do tour operators require a signed legal contract?
Reputable operators tend to ask for a booking arrangement that is formalised, showing the precise itinerary, what is included, the cancellation terms, and the liability limits. In practice, this document functions as a legally binding agreement, guarding both your money investment and the agency's operational commitments, even when it feels routine.
Do not wire anything just because of a casual email thread. Make sure the booking form clearly lists the exact hotel names, room types, and the refund conditions, plus keep a signed digital copy for your records before you trigger any bank transfer.