Let me be blunt. Limit the number of toasts. Ask your friends what they hate most about weddings, and I bet the number one answer will be too many toasts that are far too long. Nobody gives a shit or understands the private jokes besides you, the groom and the person giving the toast. This is not your Bat Mitzvah and it is not appropriate for your friends to ramble on and on like a 13 year old.