While you've got some thoughts already, I'd suggest you provide a couple of additional details such as total number aboard, relationships (family with kids, 3 couples, etc.) in order to provide some informed feedback from this board. Certainly, that would be critical information which I'm certain you've provided to brokers - and for good reason.

Lastly, you might want to provide detail on which boats are coming from which charter companies as that also makes a difference - not all charter companies are created equally!

Good luck in your search and trip.