I agree with Lat’s recommendations re the Keys, esp at this time of year. If it isn’t the heat, the mosquitoes will do you in. You’ll be better off in a cheap motel and there are a few inexpensive ones at this time. As you get closer to mid-July and the lobster mini-season they raise the rates dramatically. I have found the best rates in the Keys in September. Oh and there isn’t any shore diving to speak of since it will take a mile to get more than 20’ deep!