I thinnk you can manage with one bag each, especially if you mix and match.
2 swimsuits each & water shoes (if you choose to wear them) &/or flip flops
1-2 cover-ups for the ladies
2-4 day outfits (shorts, same flip flops or shoes you wear to the beach (I needed 2 outfits because I spent the CC days in my bathing suit)
2-4 dinner outfits & 1 pair of shoes each
- Men: black slacks & you can mix/match shirts (DH took a pair a of black & khaki pants last year)
- Women: 2 pairs of capris, pants or skirts with different blouses or shirts
If you are doing pirate night, then a pirate outfit.
If you are doing Palo, men can dress up the slacks by adding a polo shirt (for brunch) or button shirt, tie, and/or jacket (for dinner) and women can wear a skirt & blouse or dress.
If you are going to work out, then gym clothes and sneakers.
For DS last year, I just needed one outfit a day (and I really did not need that many because on CC days he spent those days in his swimsuit), his water shoes, sneakers, and pull-ups. Thank God I will not be needing pull-ups this trip.
I think that covers it (at least for my family). I really overpacked last year. I am trying to cut back. It was a mess the last night trying to fit all the gifts in the clothes into the suitcases.