I have seen the website and understand that I can bring my own drinks (not in glass containers). Can I bring my own food for lunch? Do I have to rent a locker, as oppose to bring my clothes to the pool area in a bag and, how much are lockers for day trippers? Lastly, we have stayed at a number of clothing optional resorts (Caliente, Hedo, Desire, Paya Bay, etc.); so, are we required to take the half day tour, or can we just arrive, register, and enjoy the full day poolside? Thanks, all!