A while back ( pre covid) I used the lower ferry in the Plus8. A "gentle" scrape of the railpipe on exiting on Dartmouth side.
More recently I parked in the carpark near the seafront. Went to the pay machine. Cash only.....no change. Went to tourist info shed, no luck with change. They suggested buying something in the nearby M&S small shop. I got a can of cool drink, got the ticket.
I now have a small bag of change ready in the car as so many pay machines fail. I use a card/phone wallet card/app as it is a lottery which one will work. Council or private carpark....both the same.