We've been to St. Martin 4 times - the ship has always docked in Phillipsburg on the Dutch side as far as I am aware. We have taken a taxi over to Orient Beach in the past - the taxi stand at the port has set pricing for taxis to other parts of the island. I think it was $5-6 a few years ago, but from images on the internet, it looks like it might be $7-8 now (for over 2 people). If you do a Google image search for "st martin port taxi pricing", you can find some images with the set pricing on the island.