I like a theater that has my kind of snacks. How can you enjoy a movie without fried calamari, a philly cheese steak sandwich, caesar salad, and brownies? Skittles and popcorn are for failures.
Of course there’s a theater that serves all that crap. Check it out.
I realize the theaters have to make a profit, but the slurping and munching and crackling drives me mad. I’m also disgusted by the messes that people leave behind them. Yes, somebody is going to clean up the theater after we’re gone, but how hard is it to take your popcorn bag with you?
This summer, I was so privileged as to see “My Fair Lady” in the West End of London, front row, center. The woman two seats down from me bought several containers of ice cream at the intermission and, afterward, placed the (presumably mostly empty) cartons on the edge of the orchestra pit. Had they fallen forward, they could have ruined expensive instruments. Thankfully, the orchestra conductor gave a grand flourish with his arm, knocked them backward off the edge, and made them her problem once more. I have no doubt that he did it intentionally, the woman and her son had been making noise through the entire performance.
I realize there’s no such risk in a movie theater setting, but really, most people have bad enough table manners with a table (and light, and utensils, and so forth).
In my native Holland a lot of cinemas are actually licensed. I would happily trade all the food innovation for some cold Dutch lager in the intermission.
Our local cinema has a wine bar. (You’re not allowed to take any refreshments out of it into the actual theaters, but it’s in the cinema building and operated by the same people.) This strikes me as particularly humorous right now because our mayor is trying to argue that the popular stereotype that this place is crawling with yuppie snobs is completely unfounded 
They also, and this is rare for Norway, sell popcorn at the refreshment kiosk. Pretty damn good popcorn, actually; if they would cut back on the salt a little and be a bit more careful about making sure it’s served hot, it could even become great popcorn.
The main cinema in Trondheim serves, or at least used to serve, something they called pizza. It was better to think of it as a hot, open-faced ham and cheese sandwich, actually, but if you ignored the fact that it wasn’t really pizza it was quite tasty. Also quite good soft-serve ice cream with flavored jimmies. You were not allowed to bring either into the theater with you - they were served at a cafe inside the building that was there so you could have a snack or a quick meal before or after the movie.