My husband is on orders so we ended up staying at the North Island Navy Gateway Inns & Suites. Since we were in the local area and intend to return with our RV, we decided to check out the park. It is small but wonderfully situated within a short bike ride to the Coronado area. The sites are small and there is no grass. It is definitely a beach and gravel area. They do have spots for retirees however I have to echo the sentiments previously stated. We had an opportunity to speak with one of people working at the area. He said, "I shouldn't be telling you this but...." When people begin with that... Anyhow he said what people do is book for 30 days. On the 28th day they drive out (leaving their items in storage) they cancel the rest of the reservation. They wait 12 hours and make another reservation for 30 days pulling back into their original site on the 30th day of the first reservation. That being said when we were visiting, we saw multiple sites available.