If your wedding is called off after the invitations are mailed and time is running short before the planned date, then you--or a friend or a family member--must pick up the phone and call each guest to inform them of the cancellation.
They must gather more than 335, 000 signatures by May 30, at a time when they're running short on money, aren't attracting deep-pocketed donors and are relying on volunteers rather than paid professionals to sign up supporters.