How late is 'too late' to call off a wedding?
Definitely don't call off the wedding right before the ceremony starts. Don't be in the dress, in the tux, and say I'm not ready for this. Give yourself a reality check ,and maybe that reality check happens a week before the wedding as people are coming into town, and maybe that reality check happens a month, six months ahead of time. It's never too late. You haven't signed the paper work, you're not officially married, but it's a lot easier, and you'll save yourself a lot of money the sooner you do it.