Those are great ports! Are you going to Trunk Bay? That has to be one of my top 5 spots in the Caribbean. The last time we went to St. Maarten, we did the TikiHut snorkel trip. The operators were fantastic. They didn't have a set time limit, which I really appreciated. They'd also take you back to the ship or drop you in town for shopping, then you could grab a ferry back to the ship.
I know you and your wife will really appreciate some alone time before November. I'm as hooked as you are, however, my pocketbook is too empty..dang it:)