You should ask for a copy of the death certificate if you are prepared to waive your contractual rights. You have no idea what some people will do in the name of money.
wah lau.... neber hear this kind of stuff. BTW, happened to me. My father died and I had to postponed my wedding for like 6+ months I think.
BTW, NOBODY and I mean NOBODY asked for death cert when I requested for extension. hotel never ask, photographer never ask, wedding boutique never ask...... all of them gave me extension and kept the original pricing somemore.