How avoid traffic october holidays Ilhabela

Hello, this is my first post and i hope there a many to come ;)
I´m here with my wife, coming from Germany, she is a teacher at a german school in Sao Paulo now.
Unfortunately she has booked a pousada at ilhabela in the october holiday from saturday to sunday, and we have heard from the horrific traffic there, a co worker told my wife they waited 4 hours for the ferry, and return way back to SP lasted over 10 hours.....!
So i had the idea to park the car some where safe in Sao Sebastião, take a cab to the ferry and go without a car to the island. What do you think, is this a good idea avoiding the the ferry problematic?

Thank you very much!! :)

New topic