Studying is his main focus, so anything outside of that, would be considered downtime. going out and exploring, or just spending the day at a beach. That is also downtime.
If he spends it just playing ranked on valorant all day, go for it. If he goes out, go for it.
Sem1-, was just saying dont do something you could potentially regret. He's going to another country to study, which is usually a once in a lifetime chance. Squandering it by playing videogames just seems like a waste of an opportunity.
We're also not saying he can't play games. it's all his choice in what he does.
Also with countries being interesting, etc. It's all in the eyes of the beholder. I find the UK god awful boring. Some people come here and spend weeks doing random shit I would never think was interesting.
I also didn't read all the comments below either. Was just responding with the comments above, as context. OP stated he was just wondering, about it. That's fine. It's fine if he did stay inside. I'm just trying to add onto what Sem1 was talking about, as he's also talking from experience of handling a similar situation.