They sell popcorn, candy, drinks and ice cream at quite a few regular counters in the lounge there. And, yes, in the theaters once you sit down, they turn off the lights, show you commercials, then they turn on ALL THE LIGHTS again and (usually) two humans with a basket nonchalantly waltz in with "Will noch jemand'n Eis" in German, "Anyone want some ice cream"?
Then of course there are always a couple of inconsiderate a-holes who want some ice cream but did not manage to buy it before... in a big theater room they are spread out nicely so sales-humans walk around with their ice cream and sell their stuff; typically the people buying either have no idea what they want so they go through the whole "what do you have" talk and/or they don't have small bills and pay with 50 or 100 bills and go through the "oh sorry I don't have change for that" talk.
And we are talking around US $20 per person per viewing for "Pirates of the Caribbean 4" for example; just for seeing the movie in half-asses 3D.
I swear to FSM: Should you ever read about a bloody massacre in a movie theater in Germany it was probably me. :9
An actual human solicits ice cream orders between the previews and the start of the movie?