I realise that this is in danger of turning into a Secret Policeman's Ball sketch, but "thrift"? With crisps and shop-made biscuits??

With us, it was just the sandwiches, and orange squash made up in the bottle. Family of 6, crammed into a superannuated Triumph Herald (nice car, but not when it's packed to the gunwales with siblings on a 250 mile journey somewhere where you KNOW it's going to rain all week and the tent WILL leak). We knew better than to even
suggest going to a roadside eatery, but one day my mum must have miscalculated - we were going with some other people, they were ahead of us, and pulled in to a Little Chef. So we had no option but to follow them - I'll swear my mum was making the sign of the cross as she entered the place, and the whole episode was conducted through gritted teeth. Probably cost more than the rest of the week's holiday, too. I had an omelette - to this day, I can remember it, as it was full of uncooked eggsnot, and I had to pick the bits of ham out of it. Blech.
And that would have been 30-odd years ago, so if they've deteriorated much since, god help us.