This place is quintessential mile-end, 'Nuff said!
Along with its neighbouring cafe, the patio/terrasse/outdoor seating are ritualistic for the neighbours and visitors to the St Viateur strip. Regardless how winter treated Montreal, that first warm day during the spring transition and bam! their outdoor is packed and bustling with energy and conversation.
Note they do serve alcohol but you do have to be member of the "Club", which i believe is $25 or 35 annually. Why dont you go inquire inside the cafe to confirm?