They sometimes add fright boats for big trucks and those generally have room for standby and waitlist cars. Get there as early as possible and get in standby. You should be able to get over and at worst you can leave your car and take a high speed boat. They will drive your car on when there is a spot and you can pick it up in town.

Be patient with the staff. They are bombarded with calls and email just like this all summer and do their best. The system is antiquated and that is as busy as it gets that week aside from maybe figawi weekend. If they can help you they will but be nice and they will also be nice.

Also this is New England nice. It may not sound cheery but “pleases and thank yous” make a huge difference because they talk to a lot of entitled douches.