The website says, "beer and wine (subject to availablitiy)." Does this location serve either of those beverages? If yes, what are the brands?

No. They 100% are not served.

Alcoholic Beverages are not sold at Royal Oak location.

I'm not sure, either; however, I do remember thinking that I'd like to order a beer during my next visit.

I don't believe they do at that location, although I have never asked, they didn't have it on the menu last time I was there.