No
Other than needing to wear them, no. Something more than basic jeans and a T-shirt will probably make you feel more "comfortable" but no one will really care much either way. Enjoy the pretzels and mustard. Get the kraut balls!
Nope
No dress code just wear clothes
No I've gone dressed up and straight after work. Either will be fine
No dress code but do be presentable
I've seen people in jeans and a nice top and dressed to the nines
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