Going on an arcade date with a boy tomorrow for my bday, advice?

So I'm 17 and tomorrow is my birthday, and I'm going to an arcade with a guy I like.

We've been talking quite a lot recently and there's been a decent amount of teasing/flirting. A while ago I posted on my story asking if anyone wanted to go to the arcade with me for my birthday (it was definitely aimed at him lol), and he replied almost immediately with "I'll come."

We're planning on spending a few hours at the arcade and maybe getting food afterwards.

We've been talking and flirting for a while now and a few days ago we went to the cinema with friends, but we sat next to each other and held hands while we both kind of flirted during the movie.

The problem is that I have approximately zero experience with dates. I'm excited, but also kind of nervous because I don't want to be awkward or accidentally make things weird. I tend to overthink everything and I'm already worrying about things like conversation, what to wear, whether he'll actually see it as a date, etc.

Does anyone have advice for arcade dates specifically? Things you wish you'd known before your first date? Or just ways to stop overthinking and enjoy the day?

Thanks :)