I've been, but unfortunately it was almost 40 years ago.
What I do remember is that Dinkelacker had the biggest name in Stuttgart. It has since bought up some of the smaller breweries in the area, including Schwaben Bräu. Schwaben Bräu and Stuttgarter Hofbräu (owned by Radeberger) seemed to have a more blue-collar image, while Fürstenberg was a bit fancier. I recall Fürstenberg as being rather bitter pilsner.
Sounds like a lot of fun, and have a great time!