Drinking age in US

[janedavitt]

Picking your brains here... I'm writing a story set at a college in Maine (I could change the state). I checked, and Maine seems to have an age limit of 21. Would it really be difficult for two second year (sophomore) students, presumably 19-20 to buy beer in a bar?

It's hard for me to wrap my head around non-drinking students; the age limit is 18 in the UK and I was drinking in pubs from 16 (sometimes you got asked your age, but you knew where to go where you wouldn't). Is it strictly enforced, especially in college towns? Or is it fairly easy to buy as long as you don't have a real baby face?

TIA!

Duplicate post; ignore it. I blame LJ, Fridays, allergies Pluto not being a planet.