A few years ago my son had a friend for a sleepover.
We had invited him so had taken them out for a while,entertained them etc dropped the boy at home.
A couple of hours later the mother phones and said the baby sitter had let them down and if there was any chance her son could come back for the night and one of them woud pick him up tomorrow morning.
So the boy gets dropped off in the evening and spends the night.
Next day I am just pottering about at home few jobs needed doing and was also waiting for a friend to pop in .
The boys asks what are we doing today.
I said you will just be playing here until one of your parents show up.
Nice day,plenty of garden toys,paddling pool,bikes etc.
Later boy starts moaning then asked to use the phone.
Dad shows up at the door after lunch time.
My son has phoned me cos he is bored,I cant believe you havent taken them out on such a lovey day.I was supposed to be going to the gym.
I put him straight and said the extra night was a favour and I would have expected him to collect his son earlier than this anyway.
That I dont change my plans because kids are bored