That's seems extremely unfair Lolly, sure it wasn't 'cause you were 'lolling' about ...
This could make a good legal case perhaps ? After all, you had a drink in there which you had paid for, and they prevented you from obtaining your goods .. doesn't seem any different than leaving a handbag behind. Still pubs, clubs regulations are different I suppose.
I would definintely have a word with the Manager next time your in (bet you do go again
) to demand that they owe you a drink !!