I went to college in 2010, and it's unreal to hear about beer vending machines.
First two years, any student could sign out the dorm lounge and with $40 and the school would provide 1/2 keg of beer, $80 would get you (2) 1/2 kegs, $120 etc.
Spring weekend, not break, First two years $5 wrist band let you drink Friday, Saturday and Sunday, regardless of age. The school provided the beer, and a constant run of bands on 3 alternating stages.
The end of my 2nd year, there was a really bad drunk driving accident with 3 underage students killed, the school stopped sponsoring alcohol at events. They also started enforcing drinking age laws.
I can't beleive beer vending, either, but I do remember cigarette machines.
But even after age 21 drinking came in in the state, most of the bars where I went to school were perfectly fine with a college ID with no age on it. (And my drivers license at the time was an unlaminated piece of index stock with no photo.)