re: Is 2.5 hours a long enough snowboard lesson for my wife and 7 year old son?

So my son wants a snowboard for Christmas. Which I don’t think is a good idea since we probably won’t be going even every year but if I were to buy him one, looks like 110-115 would be his size. My question is, can a beginner 7 year old wear snow boots instead of actual snowboard boots? Shits high dolla.

Wait you're gonna buy your 7 year old a snowboard who has never been before, goes maybe 3-4 days every two years, and we don't even know if he enjoys it/likes it/is good at it?

I'll just go on the assumption your handle has a meaning that you are loaded and just like to blow money.

Instead of telling you get all that second hand (because he would grow out of both the board and the boots) or just rent... I'll answer your question which would be no, you should get board boots so they fit into the bindings well. A simple snow boot would likely be too small and loose, and you risk injury like a twisted ankle or worse.

You will end up with a soar arse and maybe some places you have never hurt with snowboarding. I used to be able to do both skiing and snowboarding... skiing I tend to cross them because I am used to playing hockey and you cross there while skating. I started with snowboarding if that matters.