My fiance and I are hoping to do a destination wedding in Hawaii (Big Island). Our plan is to have an early (sunrise?) ceremony with a brunch as our meal for the day - along with plenty of mimosas and other brunch drinks! But we aren't sure what to do with everyone after that. In the afternoon we would love to take everyone for a snorkel cruise on a catamaran. This means the day would wrap up around 5:30 or 6:00pm. We'd love to just hang out with everyone in a casual way after that - without having a formal dinner. Any ideas on how to handle this?