Will recount my worst ever playground experience. Ds1 was hmmm 5ish I think. He had a routine at the park. He would run in, slide down the slide, run to the tyre swing go in that for 2 seconds, then would go on the see-saw, then we could all relax, routine over, and enjoy the park.
One day we arrived just as a little goirl got in the tyre swing. "oh hell" I thought. Ds1 ran in, went down the slide, ran over to the tyre swing. Mum pushed the girl. DS1 tried to get in , I grabbed him and pulled him away, he ran back, and started screaming. The girl went to get off - the mum said "you stay in there" and she kept her dd in there swinging backwards and forwards for 10 bloody minutes whilst ds1 went absoutelty ballistic. Mother all the time sucking lemons, looking at ds1 as if he was a pice of scum. Me waving PECS cards around, using obvoius SN phrases, and on she went swing, swing swing. IN this time he obviously didn;t say a single word (being unable to talk), just screamed, I mean reallly even for the most sheltered it shouldn't have been that hard to work out (and no I couldn't talk to her and discuss it because I was trying to keep ds1 far enough away from the swing so he wouldn't pull her daughter off in order to get on himself). Eventually the mother allowed her dd off the swing. Ds1 climbed oin swung forwards, backwards, forwards backwards, climbed off to run over and do the see saw bit then spent a happpy half hour at the park.
She did have the decency to look a bit shocked when he spent 2 seconds on the swing.
And taking him home without completing the routine wasn't really an option because a) i would have pphysically struggled to get him in the car and b) he would have screamed for hours.
We didn't go to a park for a long time after that. My favourite park is still one without any other children in it. Or if therer are kids, a park without their parents will do.
In fact I think that park should be renamed lemon suckers park, last time we went there when there were others there (its often empty which is why I go there) one woman spent the entire time cuddling her newborn baby whilst stariing at ds1 as if he was form another planet. He wasn't getting in anyone's way, just making strange noises.