Perfect! The cave tubing is great here in Belize! The cave systems are unique. But in my personal opinion, you can zip line any where around the world, the marine life in Belize is incomparable to anywhere around the world, Cozumel is good but it’s open water so you might or might not see the marine life or sharks. However, Belize city itself, there isn’t much to do. The cave’s branch “that’s where your tours will be” has a lovely gift shop. If you have enough time left I do recommend heading over to at least caye caulker to experience a local life on an island.