In this instance yes.

The Dartmouth Arms went out of their way to resolve a problem that wasn't of their making in order to try and pacify a customer who had done something wrong. Something that most people using the facility don't do because they take the time to read a number of very clear signs.

In my book that shows remarkable customer service on the part of The Dartmouth Arms. They took the time and energy to negotiate with a third party on behalf of their customer in order to get the fine reversed - something neither they nor the parking company were under any obligation to do.

Rather than reward that JulietP decided to post a 'warning' on a public forum, criticised the food and implied that The Dartmouth Arms were complicit in some sort of scam whereby it was in their interest to dupe customers as they took a cut of the fines.

JulietP's party was in the wrong at every stage here and The Dartmouth Arms bent over backwards to help. For their efforts they got brickbats rather than plaudits. I would suggest a gracious thank you and an acknowledgement of their hard work would be more appropriate than a 'warning' most people would never need as they can both read and understand parking notices in a car park.