I think it is rather good that the staff were making silly gestures (providing they were appropriate) - it would certainly give a happy feel to the whole thing rather than it being all boring and serious making it, in my opinion, less consumer friendly.
They also do not have an endless supply of drinks. If they run out of drinks because it turns out to be more popular than expected, then thats just how it goes, not as simple as getting some more cups
RE: Go North East: Latest News & Discussion - March 2016