This theater has a thing set up where you put your own butter on. I almost sent hubby back out to put more butter when we got half way down the bag of popcorn.
The theatre back home (in Kentucky) has a deal where you buy a plastic bucket one time, and it's free refills for the year. It cost like $21 I think, but well worth it. You can even go by if you're not watching a movie and get it filled.