You can legally cut in line at the ferry landing if you park your car. So, cut, and park. You can safely cut by turning rite at the flashing lite about a mile before the landing and finding your way thru the neighborhood there. Unload your bikes and take the next boat! -or- if you look to the Left, there is a "car trail" that leads to the parking area at the Ferry Landing.
With bicycles, there are no parking issues on the island. Bring a lock so you can enjoy your rest stops.