you need to maybe try the new way to see movies at the theater....
old way - go early, stand in line for tickets, stand in line for food, go in early to pick good seats hope nobody sits near you, uncomfortable, etc....
new way - buy tickets online, reserved seats, big recliner seats so nobody is near you anyway, no need to get there early, walk up AFTER showtime (~10 mins), don't wait in any lines just go straight to the ticket taker flash your phone, your perfect seats where you wanted them are reserved and open when you walk in, sit down, don't buy any food/drinks if you don't want any cuz you aren't there that long, movie starts soon, watch movie, go home.
Win Win. All thats left is great parts - big screen, sound system and better chairs.
Of course depends where you are - most theaters near me are reserved and recliner types now. I don't go to other kinds any more.
as for snacks if you really want them 2 options
AMC - buy ahead online and pick up on your way in, no wait
Others - sneak in a bottled drink and candy from the dollar store in the wife's purse, jacket pockets, or cargo shorts