Lederhosen for Tourists

The highlight of my year is my local Oktoberfest. I take it as seriously as an American can, meaning I have an OK pair of lederhosen from Amazon. I will be in Munich in May and want to buy a little bit nicer pair and get the cardigan to go with it. Will there be any opportunity or event in May for me to wear my new lederhosen, without looking like Clark Griswold?