This is our first cruise, and we'll have our two kids, ages 7 and 4. I'm considering the Seahorse Catamaran Snorkeling Adventure for my DH and my 7 yr old DD. She is an excellent swimmer, loves to dive to the bottom of the pool - swims better than me actually - so I'm not worried about her safety. My question is whether or not it's worth the extra cost (total of $80) for both of them to do this. Or would we be better of just purchasing snorkeling equipment before we leave (we live in Florida, so it would get used again). Is there somewhere they can snorkel without paying the added fee? I know the catamaran would be fun for them but not too thrilled about having to entertain the 4 yr old by myself for 3 hours since he'll be ticked that he didn't get to go.