I'm working on our invites and matching RSVP postcards. We are having our ceremony on the beach (behind the hotel) with a reception in the hotel's ballroom. I'd say it's a smart casual sort of dress code (guys in khakis and Tommy Bahama shirts are ok - suits not necessary, women in sundresses) so it's not super formal but not super casual. Our invites/rsvp post cards are beach themed with starfish and shells.
I'm exploring funny rsvp wording like "Yes, sunscreen is packed! Save us ___ beach chairs" and "Sorry, all tide up...must wave your invitation" and things along those lines (I have a long list of options going at the moment!). But, do you think guests would find these confusing to choose from? Is it better to just go the standard "Accepts" and "Declines" route?