The sooner you buy your wedding insurance the sooner you're covered, should something go wrong and you need to cancel, postpone or get a refund for one element of the wedding.
It doesn't cost any extra to book earlier and you can buy most policies from two years before the wedding date up until around a week, or sometimes 24 hours, before – even if you've already paid for deposits.
This means you'd be covered should the venue be destroyed in a fire a year before your wedding date, or if a serious illness set in for a family member six months before the ceremony.