You should try taking your own boat there! When we arrived in Tangier the only place we could tie up was the fuel dock, not another spot anywhere.
The fuel dock was closed, so we tied up and walked up to Mrs. Crockett's for dinner, they were pretty sure we were not locals and asked us how we got there and where we tied up. We explained and she said she would have the owner come down and visit us after dinner. We got back to the boat and popped open a couple of beers, we new you can't get alcohol on the island but you can bring it in. Any way the fella that owned the dock came down and said we could stay, no charge, but we had to be gone by 4 am when the watermen start their day, and not to give any beer to kids (something we hadn't planned on doing anyway).
About 6:30 pm it looks like all the men on the island come down to the picnic pavilion where the ferry docks and play cards, checkers, and generally BS with one another, until a horn goes off at 8 pm and they all get up and leave. After 8 pm the island is a ghost town!
Now getting away from the fuel dock at 4 am is not a problem because at 3:30 am every diesel engine on the island fires up as those fella's start their day. We thought some one had moved our boat to the middle of a runway! We headed out at about 3:45 and thought the island was fogged in, but when we cleared the last channel marker it was clear as could be, what we thought was fog was diesel exhaust!
But it was an interesting trip!