Nice jeans and shirt but no t-shirt.
Casual, no T's
I agree with the other guide suggestions. No t-shirts. A pair of nice jeans and a nice shirt is fine.
Not terribly. You could be fine with some nice jeans and a button up shirt. Wouldn't recommend a tshirt.
Casual but nice. Suit and tie not required. I wouldn't recommend going in ragitty jeans and a gym shirt
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