Will be driving onto the ferry out of Woods Hole Next week. Coming from out of state, are there any special documents I need to board the ferry other than the pass I've already purchased and printed up? Thank you for your response!

What he said. ^^^

Your printout should be all you need. When you get to the Woods Hole entrance just be prepared to stop at the booth and tell them who you are. They possibly might ask the adults for ID. They will hand you your tickets and vehicle boarding pass. Then they will direct you to line up in the staging area. Eventually your line will start moving then be prepared with your tickets and boarding pass to hand to the agent as you drive onto the ferry. Just be sure to arrive at Woods Hole 30 minutes prior to your scheduled departure.