Shot my first wedding 09/02 ... outdoors & all biker attire

580EX on full auto. Other than cropping & playing with black & white versus color. Any recommendations on better use of my new flash, DOF or a preferred lens size? I found my first major hurdle inside the bar where the reception was ~ bar lighting sux! I shot all day with my 18-50mm Sigma.
I had a blast & they are very happy with all their photos ~ but still being a newbie & unaccustomed to folks wanting to pay me for taking photos .. I'm always looking for suggestions. Anyone else shot any biker weddings? I'm looking for more ideas for shots as I was fortunate enough to be asked about doing more in the coming months.