Welcome Artlove! It's always lovely to know as well how the thread's members' interests/professions spans all kinds of domains!
Yes, Michael's not averse to wear/use the stuff furnished by event creators; whether it's a hotel baseball cap, the Mostra red bag, the bear pin... good for him for endorsing it further in these little touches.
And I photoassume that everyone seemed to have a good time in Berlin! Banderas is the biggest camera ham ever, but he's got a good match in this irish lad

Hopefully he tips better this time if they go to a bar (assuming the service wasn't prickly)