Where I come from , we put those under the bed...called slop jars...piss in 'em. Why would I want to buy that damn much beer to let it go piss warm in our down South weather? This ain't Scotland, Ireland and the like. Is there a reason why I'd carry a slop jar to a bar?
Well you take it home. Typically you get something that isn't normally bottled or only seasonally available.
And I keep my beer cold in this contraption called a refrigerator. Perhaps it's called an ice box in your parts, you may need to head down to the local ice house and get a fresh block of ice though.