It's not always the case, but we usually go out to dinner before a movie, and with any luck I won't want any snacks once I'm there.
But the last time we'd had a light and early lunch, and we both ordered a hot dog once we got to the theater. That was probably a lot better than any popcorn or candy, calorie-wise. Er, hopefully at least.
But visiting the theater is only an occasional thing anyway.
I never drink regular soda anymore and don't drink diet fountain since I can't read the ingredients (I have a bad reaction to aspartame so I'm very selective about what I do drink). So all soda is out for me unless I smuggle some in and I'm used to that being the norm no matter where I go. Sometimes I'll opt for a bottled water but it's sooo pricey for what you get and hardly seems worth it. Sometimes I'll go for an iced tea but the priceyness factor jumps in there too.
Then again, that goes for all movie snacks regardless, it's just so expensive! I don't eat regular candy anymore, but I've smuggled in small amounts of the sugar-free variety. I do love the smell of popcorn and will occasionally get a small to share with my husband, but I always remember that it's not a huge deal to skip out since I can always make a fresh batch with my air popper once I'm home.
I used to absolutely have to have snacks when going to the movies: large popcorn, a big box of Junior Mints, a large regular soda, the works. Not so much now.