Gosh, the possibilities are endless. I'm assuming that since this is your honeymoom you would like romantic? How about a night snorkel on the reef? I hear they are available but am not sure which tour operators do them. On a night with a full moon, I can't think of anything more heavenly. Do you like to sail? We went sailing and it was just wonderful. Exploring any of the Mayan ruins is exciting, and there are TONS of day trips to the mainland. Not only for ruins but also other interesting points of interest. Belize City has a fantastic zoo. There are numerous wildlife preserves and river tours. If you can fit it in, staying at a Jungle lodge in the hills is intoxicating. My husband and I had a cabana on the side of a hill right on the Macal River. It was the most beautiful place I've ever seen. Lush vegetation, flowers like I've never seen, tucans and parrots........The lodge has kersone lamps in the rooms for at night, and large hammock on the front porch overhang, looking out into the jungle. The night sounds and the lamp light were just to romantic for words......Need I say more???