I went to this small island with friends from England. We parked our car in the car park and purchased our tickets, no need to reserve and walked the short distance to the ferry. It goes several times a day, so not long to wait. The crossing to Ile de Batz is only about 15 minutes. No cars are allowed. What a wonderful little island. There are several places to eat and shops. The beach is nice and a wonderful way to spend a day. It is like stepping into another time. Very peaceful. There are also youth hostels for a weekend break. Highly recommend.