Don't be sorry at all. I'm more than happy to help. First time, awesome!! Cruising rocks. Here's how it works:
-when you get off the ship in Belize, you will board a bus and that will take you on a 45-minute (approx) trip to a drop site for guests to change clothes and store their personal stuff. I went to the trouble of getting a waterproof bag, thinking I was going to carry it with me the whole time. This is not the case. You store all personal effects in a locker ($3.00USD charge). Definitely bring your ship towels to keep in the locker. Your group that you rode over on the bus with will then board another bus that will get you to the place to get your tube 15-min (approx).
-Keep in mind that once your group gets their tubes, you will be walking for approx an hour thru an actual rain forest. AWESOME!! You should burn a few calories of all the ship food on this excursion. LOL!! After you reach the place to get in the water, the fun begins. I will tell you the water is cold at first, but then becomes so refreshing after 5-minutes or so. It took us guys longer to adapt, due to the low pain threshold and major shrinkage. LOL!! You float in the open for around 5-minutes, then you enter the cave. Oh my god, it was amazing. That's all I'll say. Don't want to give too much away.
-I really hope this helps. Honestly, we didn't do anything in Roatan. Looked around, got back on the ship. But we heard from people that scuba and diving were awesome on the other side of the island. Let me know if I can help any further.
Welcome to the most addictive vacation money can buy!!!