This feels a little bit silly but I've been in quarantine for so long that I forgot how buying movie tickets work. I wanted to see a movie with friends but I dont know how to go about it. 

Do most people buy tickets at the theater or order them online beforehand? Should I worry that the movie will be packed by the time I get there? What types of things do they ask when you want to buy a ticket and how could I prepare? I dont want to mess up and embarass myself.

I'm a tiny bit worried.