What advice would you give to someone entering their first tournament?

I've never done a tournament.

I used the play finder and I don't think I even have any near me.

But I think something useful would be;

"Don't stress too much! Just enjoy the game. At the end of the day, that's all it really is. We can always attend another."

It doesn’t matter if you win! As long as you try and you have fun! This is the advice I gave myself before regionals.