https://www.tripadvisor.com/TripNews-a_ctr.BookAStayGetawayEntryForm
Five (5) Grand Prizes for US residents: $1,500 USD to be used toward your next hotel and airfare booking on TripAdvisor. The total amount must be used on a single “Trip”, defined as either a) round trip airfare (to a single destination) and hotel combined or b) round trip airfare or hotel only. A “Booking” for the prize will be defined as a non-refundable transaction for a single trip, which will include a hotel booked with any of our Instant Book partners’ websites (i.e. Booking.com, Marriott, etc.) on TripAdvisor.com and airfare found on TripAdvisor.com. The booking can be made for the winner plus one (1) guest.