So we bought our own snorkeling equipment with fins for the first year. As we did more trips, we eventually just took the masks and snorkels, leaving fins at home. It was cheaper for us to buy them than rent them. Granted, it’s easier to snorkel with fins, but not needed. You can get the vest there as that’s free And mandatory. So it Also depends on how much you can and are willing to pack. I got myself the mask that has the built in snorkel (covers the whole face) and loved it. The past 2 times we’ve not taken anything as we didn’t snorkel. If you have room for it, I’d buy my own as you never know if you may use it again. So again, it just depends on how much room you have!! Oh and FYI - that snorkel route from one side to the other is a lot of work. We were wore out after snorkeling that loop! *grin*