Not to sound like a broken record, but absolutely, no way, no how will we do this f-up's. Not even with the apology on the card from the w/s. Our first Mother's Day, we did 3 of these, which I delivered. I was cussed out by 2 of them. No explaining in the world will do.
This Christmas, we were asked to do one of these. told the w/s no way. They called back begging, saying they would give us 100%, apology on the card, yadda-yadda. I eventually told her the only way would be if a) I got 100% + $10, and b), they called the recipient and the sender to apologize and clearly explain that the florist that will be delivering the arrangement was fixing the problem. Had they not called by the time I went to deliver, I would have walked away with the arrangement still in hand. They did what they said they would do, and the recipient said to me as soon as she came to the door "I heard what happened, I'm so glad someone was able to fix it". She's been a regular customer since.
I'm convinced the apologies on the card mean absolutely nothing, and the recipient probably thinks it was added by the delivering florist as a way to CYA....
But again, even if they do what I asked at Xmas, I/we won't be doing any of these. Read the card messages carefully.