Depends which port your ship docks at. When we were there, the Paradise docked right at main pier and you just walk off the ship and you're on the main shopping street (it's one long straight street). other ships were docked farther away - you'd have to take a cab. I think if you tell the driver to take you to the San Miguel pier (not sure about the name, but if you ask for Carlos & Charlies, it is right at the one end of the shopping district, so you could start from there. If you're looking for jewellry, be prepared, almost every store offered me a free tequilla shooter while I was shopping. since i hate tequilla, i let my friend drink the shooters and i just bought tanzanite jewellry. great place to buy tshirts, and other souvenirs.