Yes, bartering is allowed. It becomes a game with the shop keepers and believe me, they expect it. If you have ever worked in retail, there is always a made up MSRP or *regular* price. Just keep working those numbers. At St. Maarten from the pier you need to get to Front street...water taxi is the best way on Great Bay, I think r/t was 5.00. On St. Thomas you have two choices, Havensight pier mall....walkable in just minutes from the ship or cab to Downtown Charlotte Amalie to Main Street. You can see this from the ship across the Harbor. Many of the shops are the same in the Mall and Main Street. Have fun.