I don't really get it either. After some thinking, I'm thinking the sign is intended to advise motorists looking for the cruise ships that they must use the airport exit to get to the cruise ships. Aside from that, the concept is pretty funny.
M,
I have noticed that the fantasy that is squatting in this image appears in several of your postings. Are you harboring any need-to-know information?
There are some amazing internet data miners here. It might be helpful if you could provide a few more specifics: approximate age, height, build, hairy, smooth, eye/hair colors, tattoos, piercings, any accent.