The venue opened its door to the wedding guests at noon, and under the guidance of the staff, people located their seats and found out about other accommodations available.
Families with small children did their best to arrive ahead of time so that they can settle their kids before joining the grownup-only party.
It's not that Mia and Hunter didn't like little children, but Madeline warned them that little angels can easily turn into devils when they throw tantrums and misbehave in general. Kids can ruin the wedding because non-parents get annoyed, while parents get embarrassed, especially in this society where people are quick to point fingers at others.