We'll be there second week of July and want to do what you are all doing... at least fishing once on a "big boat".
I've never been seasick having grown up on a boat, but my wife is a "mental must be a big boat" kind of fisher. She catches the big fish usually(I hate her), but likes going out on huge oversized boats and MUST drink a beer before wetting her line.
Anyway, from the sounds of it, this might be the boat for us too?