I have the property just south of X'tan Ha and a golf cart is not an option. You are also almost directly in front of Mexico Rocks. The second best snorkeling spot on the island. You will have kayaks at you disposal there, and you can tie up and snorkel at Mexico Rocks.
Conciser the water taxi similar to a bus service in the states. They run on a schedule and it is an easy thing to use. I also recommend stocking up on groceries in town. The restaurant there is good but a little pricey (as to be expected up north). We eat there at least once on every visit we make. Make sure you try the burgers. The chef is DJ, formally from DJ's, in San Pedro
Oliver, the manager, is very nice and will help you out with your questions.