Within the same household mosquitoes can be a problem for some people while others never notice them. If you are attractive to mosquitoes use insect repellant. I don't think you need to "worry" about any of the many bugs on island.

I've been told by many people and I think I've read it somewhere myself that mosquitoes prefer people with positive type blood. Specifically O+ and dislike negative type blood. When you're here you can get a handheld bug zapper called the Swatter for about ten bucks. It looks like a little badmitten racket with electrified "strings". I can't promise you'll get them all, but the sizzle of those you do zap is quite satisfying.