S Bahn to Marientplaz, 40 minutes, walk around there a bit, then just out the Marienplatz station and under the stone arches is Viktualmarket, much more than a farmers market, lots of permanent shops along its pedestrian street. Have a great German meal and try the local beer at Wirstaus Ayingers just a couple blocks away on a side street, where you will be expected to share a table and get to talk to locals, take a peek at the famous Hofbrauhaus just catty corner. If you want to get suited up in some quality authentic Bavarian garb or just look at feathered hats and dirndls, stop in the shop next to the Platzl Hotel, which you pass on the way.