The job of the maid of honor is to support the bride. When the bride veers into irrational bridezilla territory, then insubordination is understandable. But when the request is a simple one common on all bridesmaids? Then you're veering into a**hole territory.
A bride posted on "Am I The A**hole?" to ask whether she was wrong to fire her maid of honor from the wedding party when she ghosted everybody on the day of a big appointment.
So I recently got engaged earlier this year and very quickly got my bridesmaids picked out and made a group chat for us to all be in touch and be on the same page about everything. I booked my wedding dress appointment approximately two months in advance. All of my bridesmaids said they wanted to go, including my MOH who even texted me privately confirming she was going.