My wife was asked for a copy of my passport and birth certificate...Which she didn't have.

After being thorough, with the visa we slightly overlooked this, but in fairness it wasn't on the list of requirements.
I didn't get much sleep that night, she phoned 3 times. Worse thing was, my printer wasn't working, so I couldn't scan them and send them...They gave us the sticker in the end though.

Would be a good idea to have copies.