"I know; I'm sorry." There wasn't much more to say because he had fucked up and he would take responsibility for it, except that they needed to wait for a few days. "Please, Uncle Charlie, if there's anyway I can make it up to you. I just... I don't want to fuck up her wedding; she's been looking forward to it for years, but whatever you decide, it's fine." Yes, he could grovel on occasion, because he could admit that he was wrong.
He went to Sirius and Uncle Ron. His cousins would follow easily, as long as the twins didn't create a problem, they were ready to leave.