My word of warning: make sure everybody being invited actually likes water and the ocean.

We have lots of friends where one half of the couple really, really wants to come and says they'd love to come. Then you question the other half of the couple and you discover that that person is so afraid of water they won't take a bath or hates immersing themselves in water or gets seasick very easily.

I'm not joking. This has happened to us many times. So I always talk to everyone who wants to come and never take their partner's word for it that they'll enjoy it.

(We did take one couple where the woman was not crazy about sailing, boats nor swimming but she'd done it a number of times and was willing to go. She was a real trooper.)