Going against the grain here...all my children were also b/f but I left my eldest DD at 6 weeks old to go to a wedding, 1 month later we had another wedding where we left her as well. Both times she was left with my mum who gave her EBM and had no problems settling her. I expressed in the car in the car park at both weddings with DH keeping watch hehe.

Thinking back I most probably could have taken her to both weddings but at the time it never even occurred for me to ask and we were the first out of all our friends to have a baby so I didn't really know what you could/couldn't do/ask for if that makes sense?

Truthfully even now as an experienced mum I wouldn't take my 10 mth old to a wedding if it was childfree. What if you take yours and others have left their babies at home thinking they were not allowed? If the baby is in a safe, nurturing environment then whats the big deal for one night? Some may call me heartless but I really think there is too much over analysing about this kind of stuff. Go, enjoy the wedding, your baby will survive.