Yes! Yes! Yes! Three more days of free pizza at the pizza bar! Woo-Hoo!Three more days of the Cruise Director's corny jokes!
And three more days to just enjoy your cruise and have a great time! Obviously you'll need a few extra things (socks, undies, etc.). Just don't overpack. You don't have to dress up for the extra formal night (unless you want to). You can eat on the Lido deck, or call for room service and dine in. As for excursions, look over the choices available at each port, and choose the ones that everyone in your group would enjoy (and what your budget will allow).