We have stayed at SMB and Excellence Playa Mujeres, both times in early May. Neither place required wrist bands or reservations for dinner. We have booked an early May trip to the Iberostar Grand and am shocked to read they require wrist bands, (Obviously missed that when doing my research)....do they require you wear them the entire time or are they removable at night? Call me a baby but that thing is going to drive me crazy!!!