It is not essential to book gondola rides in Venice in advance, as you will often find gondoliers at popular locations such as the Rialto Bridge and St. Mark's Square. However, booking in advance can be a good idea if you want to secure a specific time slot or avoid possible queues during high season. In addition, some gondola companies offer advance bookings with additional benefits, such as customized itineraries or sunset tours, which can make your experience even more memorable.