The group we were with last summer went on the Brewery Tour in Bruges and they said they had a blast. My wife and I have old friends in Brussels so we broke from the group and took the train into the capitol for the day.
The brewery tour isn't actually a tour of a brewery though. All of them we were on in Europe, were brewing museums that came with samples. 8^)
We've talked about staying in Gent the next time we go. It's half way between Bruges and Brussels, still a tourist trap but mostly Belgium residents and not so many international folks. We've been to Bruges twice. It was fun and interesting but three times would be too much I think.
Have a great trip!!