I think this is the definitive list (though please correct me if I’m mistaken). Six beer marketing points available thus far:
Waldhirsch - drinking contest
Schalehafen - beer marketing minigame
Wippsbruck - automatically obtained through completion of skiing races
Capital - ‘Beer Delivery’ quest
Nordenhaven - ‘Find a Mixer’ quest
Rebhuhm Island - ‘Ain’t No Laws…’ quest
I don’t recall if you get one from Bierbrunnan, but I might be wrong.