Never had the root beer there. I always just get an ice tea.
Occasionally we have gone to a tapping, and DH gets whatever beer they tap.
They offered one in early November (Winter Nip?

) he really liked.
The last one he got the tapped beer for $4. (Coupon taken with an attitude.) The placed was packed, and the first time I can say the service was not good. (Off to a bad start when I show the podium CM my Passport membership card and his reaction is an eye roll... And it did not improve from there.)
It was wall to wall between the tapping and really large parties. (And too cold at the time to eat outside.)
Even as Passport members we left after waiting just under an hour for an open table for two. I wasn't that hungry when I went in, But was by the time we left. Instead we ate in WS.
What I really like at BRG is their Beer Cheese Soup. And I am not an alcohol drinker. It just has a good flavor.
Their kobe beef burgers are pretty good too.
I think they have another beer tapping coming up this weekend, now that I think of it...