Feel free to come as you are or strap on your lederhosen. In case you are wondering for the beer drinking competitions, good old O'Doul's is das bier so it is all safe. You can however, enjoy real beer with a bratwurst, sauerkraut and all the toppings of your choice. Admission to this event is $12 bucks and then you buy tickets inside for each food vendor.
B and I really enjoyed Oktoberfest, if you are in the SoCal region I encourage you to take advantage of the fun to be had in our local mountains. We live an hour away and it felt like another world. Or perhaps there is a similar event taking place in your town?