I'm kind of doing Day-of-coordination as a favor for a friend's daughter in a few weeks. I had no involvement in picking any of the vendors, and they've decided to go with The Pros for all three of their services. I can't remember why I didn't use them for my own wedding 4 years ago. It's only 11 days to the wedding and they haven't made final contact yet - not even to arrange final payment, so I'm a little worried. Any experiences/tips for working with them?