Apart from one reading and directing elderly aunts to the loo, ours didn't do much during the day either. Mostly they were moral support for DH during the morning, where they were definitely needed. The two bridesmaids were solely for moral support for me too!
I had the whisky for moral support! I did have one erm, whaddya call it? Not bridesmaid but chief matron or summat like that! Anyway it was Custy and she just blubbed at the back of church! I felt as though it should have been me comforting her! Mind you, I can kinda see her point now, if I'd have known then what I know now I would have blubbed too!