Tink,
Yes the Doubloon ship had a ladder to get into and out of the water, I know since I used it, my husband just jumped off the side.
We too had great fun, we took the Doubloon excursion on a
Disney cruise, there were a lot of kids along, and the crew really went out of their way to make sure the kids had fun and got involved from what I could see.
The drinks are nice, they serve both alcoholic and non-alcoholic drinks, but it seemed the crew was careful not to let anybody get too smashed, like on some of those party cruises, they kept it a family atmosphere type of thing.
Drinks are free, and they passed around a big container of tortilla chips and salsa, also free. Nothing fancy, but nice to have something to nosh on after snorking.
They also come around and take a digital picture of everybody (also free) and post it on their web page.
We were quite impressed, had a lot of fun, and would go on the Doubloon again in a heartbeat! Snorkling was great the day we were by Buck Island too, lots of variety of fishies to see.