I have stayed, and enjoyed my stay, at Sunshine Key RV Resort. It is less expensive than Boyd's (which is in Key West and VERY TIGHT for a large rig). It is also far less expensive than Bluewater which is about 10 miles from KW. Sunshine Key is between Marathon and Big Pine which places it about 40 miles from KW, about 15 miles closer to KW than Jolly Roger.