Ok - this is the scenario.
Unexpectedly ended up looking after a friend's 3 year old for the day. I have a 2yr old and a nearly 4 yr old.
Friend doesn't really have any rules and gives into her dc's every whim. I by contrast have quite a lot of rules.
I started by being more liberal with visting child than I would be with my own, but after a while I could see my dcs were puzzled by this so I changed tack.
The result was that when I refused to by chocolate in a shop for the visiting child, it sat on the pavement outside and screamed - tbh, I was not totally sure how to deal with this. I would have ignored mine and moved to about 10ft away but felt I couldn't do this, so entered into negotiations to provide chocolate at home. There were similar events at several points through the day, another one involved dh telling child 3 times that the stones in the garden had to stay there and not in the kitchen - after the thrid time of being ignored, he shut the backdoor and said no playing outside for a while which again resulted in tantrums.
It was clearly upsetting to the child to suddenly become subect to rules and I wonder if I was too harsh. On the otherhand, my dcs clearly thought it was unfair that they should be subect to rules that this child was not. Tbh I'm not sure how well I handled it and that I didn't let my friend down with my treatment of her child - what does anyone else think?