We did a self guided walking tour of Old San Juan. Charming old city with colorful buildings and gardens. We loved touring El Morro - the old spanish fort. Much more history there than we expected.
Took a cab directly to South Friars Beach and had a lovely, relaxing day at Carambola Beach Club. There was not much snorkeling to speak of but we rented a large loveseat under a palm tree on the beach for $20 and walked down the beach to the Shipwreck Bar for lunch. Great time!
This was our 3rd visit to St Maarten but our first where we didn't rent a car and drive all over. We took a cab to Orient Beach and spent the whole day relaxing there. It was spectacular. It gets pretty busy with people from the cruise ships and the island but we loved it. Club Kaokao was the perfect location. We had a great beachfront lunch there though it was pricey. Well worth it.