Thanks for the advice so far!

I think we have most of the things mentioned - swim diapers and float for sure - he's been in the water many times already and loves it. Even had him completely on his back in the tub and while in his life vest and he was comfortable. I think he'll love the warm water in the BVI as my parents pool is on the cool side!

We use the chux pads and will be sure to bring many plus diaper cream - we have found triple paste to be excellent. Gotta get some extra pacifiers though - never seem to have enough!

And fortunately we will have A/C, so sleeping won't be a big deal - we're actually going to put him in the v-berth off our cabin saving us from trying to bring a pack N play.. But we'll bring the mosquito netting for when we are off the boat!

Really looking forward to the trip!

Any thoughts on a stroller? We've been going back and forth - it would certainly be nice at times.. we're thinking maybe a small umbrella stroller might be good and pack easily?