I am amazed at the diverse areas that Belize has for such smaller square footage of area! You could spend 2 weeks here and still not do everything and see everything. Want to go zip lining? Check. Want to explore Mayan ruins? Check. Want to cave dive the amazing Great Blue Hole? Check and Check! Want to see Jaguars and monkeys? Check. Is bird watching on your list? They have that too! And of course its an island so yes, even swimming and a beach day is something you can do.