While a few of the things you can bet on are pretty tame, like, What color will Kate's wedding dress be? (Ivory 2/3) or who will catch the wedding bouquet? (Prince Harry's girlfriend Chelsy Davy 15/1), most of them are kinda out there.
Among the highlights:
Will Kate jilt William at the altar? (Yes 500/1)
Will it rain? (Yes 7/2)
Who's most likely to cry? (Kate's mom 3/2)
Will Harry drop the rings? (Yes 25/1) Or forget the rings? (Yes 100/1)
How long will the couple's first kiss be after they tie the knot? (0-3 seconds 10/11)
What will be the color of the first bikini worn by Kate on the honeymoon? (White 2/1)