Make a pass at the groom's father. Then at the bride's mother.
Slip a bottle of tar into your clutch bag and spill it on the bride.
Take your needlework case and put some fine holes in the cake. Drizzle in some cod liver oil.
Take your pets along with you.
Before you go, visit the pet shop. You never know when they'll be a sale on - small yappy type dogs and rats make ideal companions.
On no account bathe or wash your hair between now and tomorrow. In fact, go for a 10 mile run right now, in the outfit you're planning on wearing. Make it a muddy run, and have a nosebleed if you can.
Black out some of your teeth.
Do you know Pete Doherty? He is the ideal plus one.
Make sure that crack ho is male, too.
Gosh, I'm terribly vindictive, aren't i?