You’ll wait longer before the movie. 

AMC Adds More Pre Movie Commercials  

AMC Theatres has announced more commercials before movies begin. 

According to sources, AMC will charge more for a premium commercial that airs right before the featured presentation starts.

The extra ad revenue should help AMC’s bottom line.  

Currently, AMC runs about 20 minutes of pre-movie commercials.

https://seekingalpha.com/news/4455189-amc-to-show-even-more-ads-in-its-theaters-before-the-actual-movie