My little draft is something along the lines of "Hey! We hope you've had a great summer so far! With our wedding date approaching, our caterer has requested we send our final numbers for guests plates by August 18th. We'd love to see you there, and if not, you will be missed! Please let us know if you can make it by Tuesday August 17th!"
Does this sound okay? I understand we may have some come in the next few days, but I have vendors now wanting counts and don't want to keep plucking along waiting for last minute cards to come. I figured they'll let me know if they're in the mail when I send this lol