WWYD (am I under reacting)?

My long-time family friend is a pretty successful florist in her city. She’s a wizard at wedding bouquets and the one who insisted a year ago that she make my bespoke bouquets & buttonholes for the wedding as her family’s gift. I was incredibly grateful! We are three months out now, and her entire family suddenly RSVPd “no.” They all gave different, conflicting reasons as to why they can’t come (it’s almost comical that they didn’t get their stories straight beforehand). Now my fiancé is mad, my dad is hurt and mad (he and florist’s dad are close) especially since he bends over backwards for them when they come to this city. I am… numb. I can’t be bothered being mad? I probably also won’t be bothered making much of an effort next time I see them either. Idk. How would you feel, or what would you do (if anything)?

Tiny update: The parents have now RSVPd yes. I’m so confused. I hope my dad hasn’t guilted them! I’ll check when I see him next. It seemed that the main reason they weren’t coming was because of a massive holiday the month after that they started planning well after they knew about my wedding etc. Oh well!

Update 2: she RSVPd YES yesterday … we had already paid a deposit with someone else by then.