Sorry it's a long one but don't want to drip feed 
Ok so today we went to a little seaside town. There is a small car park right on the beach next to cafe and loos. The other larger car park is a 10 min walk away so the smaller car park is the most desirable one. But is usually full.
We pull in to the small desirable car park to see a large BMW estate trying to manoeuvre into a spot which was very tight as it had 2 vans parked either side of the empty bay which were also close to the white lines.
There was also a skip parked opposite the space so the BMW was really struggling to park.
I paused to wait for the bmw to get into the space so I could turn round as I was now facing a dead end. There were no other empty spaces.
As we were waiting for the BMW to get into the space (and secretly enjoying the sport of the 230 point turns it was doing), a family with a pram came up to their parked car next to where I was hovering and got into their car. Result, I thought, and put my indicator on to show I would have their space when they left. They took a while to load up as had a pram etc.
The BMW then finally gave up trying to get into the tight space and reversed past me. As it did the woman in it got out and said to the driver of the car who was leaving 'we will have that space'. At the time I was still indicating and hovering next to it. So I said 'no you won't I'm waiting for it and have been for a couple of minutes'. BMW woman told me to try the space they couldn't get into. I said no it was too tight and I don't want to end up scratching cars.
She then said we would get in the tight space as our car is smaller (Astra).
I still said no, at which point she got angry and said they were at the car park first and should have had the right to the space I was now waiting for.
I repeated that I wasn't willing to have the tight space. By now the family with the pram had left, so I wound up my window to shut out BMW womans rant and reversed into my spot.
BMW people left in a huff.
So WIBU?