Got ferry to Rothesay from here. Would advise booking and printing off tickets in advance as you can't buy tickets on board and having to dash to the ticket office, meant I missed the ferry which was in and had to wait an hour for the next one.
£32.50 for a car and £8.10 for driver return which is a bit steep to go the short trip to Rothesay but this is a return valid for five days. It is cheaper to go as a foot passenger (£8.10) but there was limited parking (no spaces) for me to leave the car and a car is recommended for exploring Rothesay.
Service appears to be hourly and leaves on time - only a 30 minute crossing with an on-board shop with which to get snacks, coffee's and newspapers. read more