Is there a legal age you can leave DC in a hotel room alone? This would be one very sensible 12 year old left from 7-10pm. He has a phone and could obviously go to hotel reception if there was a problem. Or maybe the hotel wouldn’t let him be there alone? I would be a 10 minute walk away.
I wouldn’t leave him in the evening at home although he’s used to being alone in the day for an hour or two. I can’t work out whether it’s ok or not!