Dd1 was 7 last friday and had a party yesterday which I said she could invite 15 friends to. I sent out invites 2 weeks in advance, 3 sent "word of mouth" replies back via dd1 which wasn't terribly reliable, 1 didn't reply until 3 hours before the party started and 2 told me they'd come (got it in writing) and then never turned up!
Luckily dd isn't too bothered about it all as I made up they must have been poorly to not turn up and she even took their party bags into school for them.
I'm was cross to start with that she wanted one of the girls who didn't turn up to come to our house for tea on her actual birthday. She wrote her a lovely letter inviting her with our phone number on and every night she came home crying because she hadn't replied (and never came).
(Rant over)