Hello. I see that the Best of Germany tour has nothing organized while in Munich. Has your guide arranged for a group activity at nearby Klöster Andechs, by chance? Thanks.
You should contact the Rick Steves office with your questions regarding the tour.
If you're going to be in Munich, reserve time before or after your tour to see more of Bavaria. Munich is a great European city.
My daughter and I went to Oktoberfest last year--in Helen, Georgia. It was the first place in the U.S. that I found Andechs beer--Nectar of the Gods produced by The Brothers. The city is maybe 45 minutes SW of Munich and it's a real old time German beer hall.
Andechs is awesome ... huge outdoor deck, sat outside with the family on a gorgeous spring day in June 2009, gnawing on a haxn and guzzling a doppelbock dunkel.
I recommend Nymphenburg Castle, an easy tram ride from the Excelsior hotel in Munich.