Spend the morning playing tennis or work out at the fitness center (open 24 hours); sign up for the guided bike trip into Puerto Morelos or go snorkeling. Whatever you decide to do, it is always a good idea to call in at the Activity Center or ask your Concierge about the social activities planned for the day for you and your children. They include yoga and aqua fitness, dance and Spanish classes, board and card games, art workshops and much more.