It's not a party but an activity you need to prebook. I have to book tomorrow or availablity will be gone for Saturday.
Out of 7 kids not a single RSVP.
I don't know whether to book the 8 kids and just see if they turn up. Book the 8 kids and if no RSVP just take family kids (but what if his school mates just turn up?!)
Why don't people just text back :(