Drove for an hour and a bit to the ferry port, where we boarded the 5 hour ferry to Les Iles de la Madeleine. We have loads of things to keep the kids distracted and there is loads of space on board, so the crossing was painless.
What wasn't painless was the arrival. Esther had an email confirming 2 adults and 2 children at a youth hostel on the grounds of a lovely campsite. By some glitch the system had only booked 1 single bed and they were fully booked. All we managed to get was our deposit back and the guys at the office phoned around and found us some alternative accommodation: 2 nights at a campsite cabin and another 3 at a motel. This is not what we wanted - worse location, more expensive, and we need to move - so we will be putting in an official complaint.