Go to oktoberfest for the great beer and to oggle the women in dirndls. I would also just generally try tons of food and drink. I would also takes trains to pretty much every major attraction in the Eurozone.
It's not something you have to bring up.
Even if it sits at the back of your head (which it shouldn't, seeing as how it's a concept that was true 93 years ago), you should easily be able to talk about the country without jumping to conclusions or mentioning it pointlessly.
It's a joke. Anyone I've ever known with supposed German "heritage" cries and cries if anyone makes jokes about Germany being national socialists.
Bullstuff, they're too liberal now.
Complete opposite stereotype.
They're national socialists about using national socialist symbols now though.