From what I remember, and it can't be much different. No need for taxi, it is a short walk, although was some gravel and pot holes along the way if you are dragging luggage. Don't worry about it at all, just make a hard left after exiting the airport and bare left at the end of the walkway and wind through the parking and gravel toward the bay …. a 100 yards (+/-). The rest is pretty obvious …. so just grab a beer or drink and hang out until the Scrub ferry arrives. You can ask someone where the ferry will pick-up, although it will be right in front of you. Y'all have fun!