Haha this old house holds the heat very well upstairs in the summer. I make it up to her in the winter when I keep the heat set to about 60F
All winter long when she's hiding under the blanket I tell her to think about how hot it it is up there in the summer

Hope he has as much fun at that range as your other son did at Bill's!
He's shown me some YT vids of it, it looks ok, but doesn't have the same impact I don't think that Bills has ( I still cant get over the photos that Tom took of the guns on the walls at Bills) !!
Its a shame they can't ever go together, but there needs to be one of them to stay behind in Oz to run things.