Looking for a bit of advice re. DS birthday party. Beginning of last week we handed in invites to the school. The teacher handed them all out at the end of the day as the kids were getting picked up. We handed out 20 in total, 5 came back that evening confirming they were coming - the rest, nothing!! We asked them to rsvp by the end of last week as we need to confirm numbers with venue, but still nothing.
15 people just not replying seems an awful lot to me. He is only in reception so I don't know loads of parents yet. We do have a WhatsApp group with all the parents in the class, however due to restrictions on numbers allowed at venue we couldn't invite the whole class. A friend of mine told me not to message parents on that to remind them as those whose kids didn't get invited will be offended. I am not sure this would offend me as I understand how kids parties work/can't always invite whole class etc, so just wanted to gauge opinion on this!