In the interest of time, we chose not to take the free trolley, but took a $5 per person taxi ride from the ship to El Morro, the very scenic historic fort overlooking the entrance to San Juan harbor. It is not that far to walk, but I was saving steps due to a sore knee. For the same reason, we hopped onto the free trolley at El Morro's entrance and enjoyed a short ride to the first stop at the top of Calle Cristo, perhaps the most beautiful north/south street in Old San Juan. Across from the cathedral, we enjoyed excellent sangria and tapas in the El Picoteo restaurant located in the 350 year old Hotel El Convento. We thoroughly enjoyed our evening walk downhill back to the ship, stopping at great shops along the way.
St. Martin is usually one of my favorite ports. This time we took a ship excursion to Marigot because we love to visit Sarafina's pastry shop for their excellent french macarons (not to be confused with the lowly American macaroon). When we did a similar trip two years ago, I don't recall there being traffic jams around the whole island. I was thankful to be on a ship excursion as a taxi ride would have been nerve wracking given the lengthy delays. Last year's America's Cup Yacht Race was a much better excursion option!
Had a perfect beach day although not only have all the Cruise Critic people found Emerald Beach, so have the pushy vendors! Will go to another beach next time - maybe will try taking the ferry at Crown Bay over to the uncrowded beach on Water Island ... I'm thinking that the ten minute ferry ride might deter the masses!