My family and I often visit the Janesville Wisconsin area and will again be visiting in late June of this year.  While on a recent trip I caught an add in one of the airline mags about Milwaukees Old German Beer Hall and thought it'd be fun to see.  So I thought we'd shoot over and spend a day in Milwaukee, but I'll bet there's more to do then just the beer hall.  So I was wondering, if my family (3 childen/wife) and I stay in a hotel close to the beer hall are there things like lake tours, bus tours of Milwaukee or other fun sites that would be right in the same area.  Perhaps we need to stay more then one day and we're flexible if there's things to do that would be fun for everyone.  Also, this beer hall, how does it work?  Would the kids be ok there or is this purely an adult type of place?

 Thanks for any info!