we not allowed to be honest here? while i cant say its common, we had a pretty big one where we stayed last month (mind you, ONE in 10 days), and also one at the place we stayed last August (again ONE, but threw him outside before our sons woke up).
both were large, neither flew before disposed of.
it is the tropics and i cannot imagine there is an island in the caribbean on which they don't exist. so would you never travel to florida or another island? my irrational fear is water over my head, but you better believe (after a moment of freaking) that i snorkel almost every trip.
i can't say big bugs dont creep me out, but cancel a trip because of one? now a scorpion, on the other hand....