RSVP for wedding - do I have to rsvp if I don't go?

[EmeraldGreen]

And if so, how do I? Never had to before. Thanks x

I wasn't invited to the Chinless-Wonder wedding
Pamina - were you?

deff should give a reply
my freind got married few weeks ago and didnt get a reply from everyone so catered for them just incase and at £25 per head it added up