I don’t get the problem with this. In the last few years, many theater chains absolutely allow food in the theater. I’ve walked into Arclight and Cinemark theaters here in CA also back on the east coast with my own food about half of the time I see a film (about 20-25 a year). I used to work for an AMC theater in the '80s, and they allow outside food now.
Not that ALL the theaters in a chain will allow it. Some do, and some post that online, due to special dietary needs. Theaters don’t want to alienate special needs customers OR enforce their teenage staff to act like food Nazis and piss off the regular folks. I’ve grabbed a bottle of Cactus Cooler or even Gatorade to drink from my fridge and waltzed in with it right in my hand at many theaters. The theater doesn’t sell it. Nor do they sell Nizza Chocolate and Licorice bars from Europe, but I can grab some at Rocket Fizz up the street from the theater. Some theaters only have one chocolate item or things you just don’t like. So what is wrong with honoring the customer’s tastes? If I want a huge bag of Twizzlers, 'cause they only sell the awful, awful excuse for licorice called Red Vines, I’m bringing the one-pound bag and maybe suggesting they sell my brand.
Now on the other hand, Lammelle theaters will allow outside food too, but they have great hot dogs and even sandwiches. If I’m going there, I’ll be purchasing their food proudly. And if I ever want popcorn, what better place than a movie theater? Of course I’ll buy that-- if I’m in the mood.
Let’s look at some other ways the theaters bring it in these days. Arclight sells tickets for $15, but you pay an extra dollar for buying it online. If you want to avoid that, you’ll buy it at the theater or BUY a membership card at about $40 for a year. So 12 showings a day for the new Batman movie and and extra ticket buck from half the patrons, that’ll surely make up for the food I didn’t buy among many others who bring their own.
When I worked concessions at the AMC, I was told yes, the food markup is HUGE, but more than half comes from the popcorn and soda. A super size Coke was 96% markup. So since these are the two big cash cows, I don’t feel bad when I choose to bring my own snack. I’m probably getting at least a soda, and they get, like, $4.37 from a $4.50 soda sold, multiply that by 200 sodas per sold-out blockbuster at twelve shows a day— with all that, I think you’re being ridiculous if you feel it’s stealing, ill-willed, or just rude. The theaters are doing very well. And they will continue.