Advice for taking a baby to the movies?

Hey everyone, I have been away for a long times, and currently do not watch movies anymore. I cannot even remember the last movie I watched. I had a question for the parents on here. Or a couple.

So I had a son this past October, he is a very chill baby, but I still haven't taken him to a theater. Im super nervous about taking him the first time. He loves watching the tv when its on.

He is 4 months old, 5 months on the 11th. Im taking my grandma to watch the new scream movie when it comes out, and I will he taking my son. We will be going to an earlier movie on a weekday as I dont know how he will react. Do the parents on here have any tips? My dad apparently took me all the time, but cant seem to give me any helpful tips.

Also, as a first time mom, would the sound system be too loud? Should I look for baby ear muffs? Any help appreciated. Because I really miss going to the movies.