Hockey game dinner

Hey All. So I am working all day and then immediately heading to a hockey game at 7pm...The food choices at such events, as you all are aware, are not the healthiest options. I am eating a salad for lunch and trying to keep my snacks as light as possible throughout the day in order to have some wiggle room when it comes time for dinner-which I am going to have to eat something there. Any thoughts/suggestions?
I usually get popcorn chicken & small order of fries...but I don't know how I am suppose to calculate calories and such for those foods without really knowing the serving size information. I could go with pizza but I am really not a pizza fan...I gotta be in the mood for it. lol My options are limited....