Activity for Mrs Carissa Duerr

Maybe a setup stupid question, and I can't find an answer so I'm asking anyways . I got a cute gift box for my fmil and future aunt who are throwing me a bridal shower. Do i bring them with and give them before the shower. It seems weird to thank...

Do i need typo specify a dress code for my guests? The wedding and reception are at a country club. I honestly don't really care what my guests wear. But is it better for them if ispecify?