It’s possible to be off the dock at 2 but it would mean cutting corners. With. 11:40 arrival they will get to TMM about 1. Maybe 12:45 if no cruise ship is in and customs quick. Maybe 1:30 if things bog down. A proper boat briefing should take at least a hour. You still need to provision, inventory the boat, have lunch and accomplish all the little things that pop up getting off the dock. 4 would be a better target and still allow time to make it to Peter or Norman.
G