What Do You Do When Someone “No Shows” To Your Wedding?

Hear about the people that no showed to a wedding after an RSVP saying they would attend? The bridal party sent them a bill for the cost they incurred for their spot.

What would you have done if that happened to you?

Personally, if I said I would attend something, and unforeseeable or otherwise circumstances occurred that kept me from attending, there would be an apology letter sent with the gift. If someone no shows, and doesn’t send a gift too, is it better to let sleeping dogs lie? What would you do if you were in either parties’ shoes?