A
astrostu
Guest
I don' know about the others but I strongly doubt people will have others hold a date for a fee. They would probably charge the same as what they would for a wedding they could have shot that day or else it wouldn't make sense financially.
Does this hold even if the backups aren't normal wedding photographers? I would think that if your backups are capable photographers but aren't wedding photographers, then they'd be more willing to hold it open.