I was there today.
This morning there were 5/6 vans parked in the harbour car parking spaces, and another 3 vans on the prom to the east. There is a notice on the prom from the residents setting out their concerns, and asking people not to camp there. There were 3 vans right next to the notice! The notice says the harbour car park was being abused, including emptying of waste water etc. We only have ourselves to blame if these things happen, and access is prevented.
Today in the car-park to the east (which is very small) there are 3 vans parked up for the night.
A friend who lives in the area tells me that the car parks are heavily used for sports activities, golf, bowling, kids football and dog walking. There are a lot of complaints to the council about the campervans taking up all the car park space and there was an incident when a fire engine couldn't get access. This was not the campervans blocking access, but the knock on consequences.
To be fair. I understand why local residents and habitual users get frustrated, it's a residential area, not really wild camping. Although it does have a great view!!