I laughed and then assured her that what I didn't write about that day was the "spoil factor." This is the rule that we have that when the boys are visiting with friends and family, our home rules need not apply. The boys can have dessert if they don't finish dinner, play extra video games, go to bed late, have cereal for breakfast...all those fun things that grandparents and aunts and uncles get to do (for children they then get to send home to parents!) Sure, if I also happen to be at grandma's house I will casually slip in some fruit or vegetables, or run interference on media if I see it affecting one child too much. But usually I just let it go.
I will say that this works for us because none of our relatives are overly indulgent to the point of it being really detrimental. And it likely wouldn't happen more than once a week, or one every two weeks. That I can handle.
(However, I have written before about my strict adherence to nap times and bed times, because that is one variant that throws things off for days, and I'm just not up to dealing with the fallout for two or three days after!)
Anyway, it's nice that the boys know that Ma and Pa will probably take them to Playplace for lunch, and the Grandma always has a tiny box of Smarties in her pocket for them, or that Auntie Jennifer lets them eat cereal in bed while watching cartoons, or Uncle Sean and Aunt Julia have awesome video games. As my own nephews and nieces get a little older, I'm excited to fill in my own role as aunt and see what fun (damage) I can do.