Maybe try facebook, myspace or cruisehipent.com.
Facebook has a few groups just for cruise entertainers, shoppies, spa people, even certain ships have their own fan groups with crew members. Very, very popular with crewmembers that I know right now - in fact it's now quickly becoming the preferred way to keep in touch, especially when on vacation from the ship
If the gaydar is working (and a good search with keywords) - I'm sure you can find some connections. 8)