I've read all the reviews about the Westin Rio Mar and some of them made me really nervous. Is it really that secluded that I need to rent a car to get anywhere? Does anyone know how much it is to rent a car per day? What about buying groceries or food outside of the resort? Any suggestions on where to go? How are the tours that the hotel provides, to El Yunque and Old San Juan. I'm definitely interested in booking some tours for snorkelling, El Yunque & Old San Juan. Is it best to book through the hotel or a tour agency? I'd appreciate any information anyone has on Westin Rio Mar since this will be my first visit there. Thanks!