My boyfriend and I took the X-Rails tour to Jade Caverns when our ship (The Allure of the seas) stopped by Cozumel, Mexico. We are always looking for new experience and high sensations. I can definately say that this excursion was worth it! If I can give you one tip: don't wear your favorite clothes on this excursion because, trust me you're gonna get dirty. You can rent their crocs, goggles and of course an helmet for your safety. Don't bring your personal camera. Maybe if you have a GO-PRO you should bring this instead. I liked the fact that we did more than driving our vehicules. We did feed parrots, held a crocodile and bathed in a cenote full of bats! Plus, the guides Mike and Tony were super sympathetic, had a great sens of humor and were a lot informed about this area. I highly recommend this tour! It was by far the most exiting and fun day of my cruise.