My father is wonderful. He's also elderly with poor eye sight and low energy levels. When I was growing up everything was cooked from scratch but now when DC (4 and 2) visit he buys god awful pasta-based ready meals for them. I just don't eat while there. I get it - it takes the stress out for him and when it's a bit of lunch every other week I don't mind them eating rubbish.
We're staying over tonight. He's gone out for an hour. Am I awful for not cooking the horror shows he's bought for them and instead making some plain pasta with veg from the fridge?
other details - my mum died when I was young so not a factor here, money is not a problem at all, I would never ever ever be rude or make a point, I'll do it quietly and say they weren't that hungry.