I doubt they have any kind of "impact fees". A lot of the development is done without proper permits. Some politicicians are on the "take" and that allows things to happen that shouldn't. I have been going there for over 34 years and have island friends. You are correct, the impact on their daily life is much different than what a visitor would experience for a week or so. They have to deal with the high costs, the daily traffic for work, shopping, etc. It is not fun in many cases.