If so, take the ferry across the gulf to Paquera and go explore some of the beaches on the peninsula. Mal Pais, Santa Teresa and Montezuma are all cool. You can go for a horseback ride on the beach or check out the zipline tour thing in Cabo Blanco nat'l park. There's a surf shop a hundred yards off the beach in Sta Teresa where you can rent a board.
Just make sure you leave early and plan for a very full day - you'll be on the ferry/driving for a couple hours each way. Totally worth it though.