Thanks for your quick responce and clarification! 

I recently had simlilar shops very its accepted everywhere in the shop and not explicitely forbidden. 

I think the the inventors of the current values baby_feeding=yes/no/room did only think in physical features, but not if its allowed/disallowed. 

I still don`t know how we should tag these shops were its allows/permissive/forbidden. Your value of baby_feeding=open might be a step into this direction, but its hard to interpretate this value as a human being.

redd