Samsung had a hidden hospitality menu, or hotel mode, search for how to access it for your model. You can have it go right to an input on power on.

Getting an hospitality variant tv might be an option too. I have a Samsung one which does have some smart features but they are mostly backend related. I think there's only YouTube on the user facing side. I got it because they are support to be better TVs for the money but it was such a huge pain to set up that I wouldn't do it again.