Thanks for all the suggestions! Some of those dresses are really cute and look doable on a bike...I'm concerned that it might be really hot that day so I'm thinking maybe I should wear something more like an athletic dress for the ride (or maybe just ride in regular cycling gear?) and change for the ceremony...early September is still summer here and it can be in the mid 90's. SO MANY CHOICES! I need to just make up my damn mind...