I bought the refillable souvenir 1/2 yard at the Rose and Crown pub years ago and carried it in my luggage to WDW for several years, but left it in the trash at our resort when I was told that they can't refill them anymore because of sanitary/health reasons. (the contaminated container would come into contact with the beer tap). I asked why the can't just put the beer in a disposable cup, pour it into the 1/2 yard and throw the cup away, and was told that it was not Disney policy, but a local health ordinance of some sort. I'm not convinced that that's the facts; Disney might have seen the "two pints for the price of one" discount as a profit drain.