"We don't remember days, we remember moments"
I wish I could help on this!
Here is my solution. When Grandpa Stringham wanted McDonald's all the time, they would give him a rough time about it. Now the tables have turned. I used to think, he's 90 years old...if he wants McDonald's...let him have McDonald's. He is obviously getting some excitement out of it. It's a joy to him to get his kids meal everyday. Now I'm wondering the same thing about Grandma and Grandpa. If that's the little bit of joy they're getting, and the fact that they even remember McDonald's still, maybe it's best just to get it for them. It makes them happy, and it will end up being less work for you.