Experience playing game store games?

Hi—the group of friends and family I’ve played with for a few years are pretty much disbanded. I’ve been considering hoping in to a game store game—I live in Maine and a small town game store plays on Friday’s.

I’m SUPER nervous, though. I feel like my old group kind of understood my quirks (I suck at math and don’t pay much attention to numbers, I’m more in it for the story) and we played pathfinder...pretty sure this group plays 5e so it would be a learning curve.

Do you have good experiences playing and hopping into game store games? Do I just like...show up with a character?