So, there are lots of mixed reviews of this place, but I notice that the particularly bad ones come from shortly after they opened, which might tell you something of the evolution of this place.
My experience was actually amazing and one of the best large group restaurant experiences I've had in Toronto.
I called in about a week before to make a reservation for 30 people for my upcoming birthday celebration. They told me that while their private room was booked out, they would work to accommodate my group in the South Mezzanine (upstairs). I was a little nervous, as I was making this booking without having been to the BrewHouse (but it came highly recommended from a couple trusted friends) but I made the reservation anyway. They require a $200 authorization for the booking, which only actually gets charged if you cancel inside of 24 hours. Fair enough.
We arrived and were promptly seated in our section, at a giant table just for us. We had a dedicated server and busser, who stuck with us the whole night. These two people went above and beyond in every way. Not only did they do separate bills for 30 (a crazy plan, but given that most of my guests arrived over the course of the first hour it was a way to keep everything on track) but they made sure we always had everything we needed. Our server even stayed an extra hour and a half after his shift was supposed to end, to ensure nothing odd happened if we transitioned to another server.
Our food came out lightening fast, so fast it actually kind of surprised everyone, our server included. The food was all great, with special shout outs for the burgers (veggie and normal), the wings, and especially the pretzels (just get them). We never waited long for drinks and generally just had a great experience overall.
Most of my guests had never been to the BrewHouse before but I know for a fact they will all be back soon. I've always loved Amsterdam Beer and am now sold on their BrewHouse too.
Well done!