As a frequent car renter on sxm as well as a follower of TTOL, an sxm site, the conventional wisdom is to rent from a local agency and Unity, AAA, and my favorite Kenny's are all highly recommended. You can contact all 3 and go with the lowest price. I request a "scratch and dent" for less concern about a new bump although it has never happened. Be sure to ask from whoever you rent from if they want you to lock the doors or not when at the beach and never, ever, never leave anything in the car even if you are just running into a store.