I will also weigh in on the Molsons things for two reasons -- One, I'm Canadian and two, I tried to read the play, way back when.
And the Molsons thing was part of why I put the play down.
Because it's in the play. It's her little affectation, and for some reason it really bugged me. It seemed like it was signalling a personality, but in such a weird way. Because Molsons was/is ubiquitous in Canada and kinda a speciality thing in the US. I do remember that nationality was a big part of how Labatts and Molsons sold themselves back then (Tom Cavanaugh, of Ed and The Flash, first came to my notice doing a series of light beer ads and 90% of them slagged the US in positioning the beer as superior to other light beers.) The big thing back then was that our beer a) tasted better and b) had more alcohol in it.
But these were our MOST common and MOST basic beers and they were not cool. They were the "I don't know what else to order that might be more interesting" beers. But in the US, they were imported and I suppose they have some kinda of cache? This was actually confirmed for me when I'd meet American tourists, who would talk about how much better our beer was. I really, really do not think this is the case anymore, and probably hasn't been for decades. Anyway. In the play -- It was so specific and so weird that it put me off a bit. Like instead of giving this woman some actual depth, we are going to make a big thing of her non-standard beer choices. (Then there's all the other stuff about not sleeping, etc -- I guess we'd now call this an aura of Manic Pixie Dream Girl.)
As another poster pointed out, Molsons is still around, but has been bought by US beer companies and are pretty out of favour, particularly if you are a Beer Person, because those people have all switched to craft beer.