Its the role of Craig in this situation to continue with fatherly advise and support his son not to usurp him, after all his son did the inviting. His advise to let's call him "Spinnaker" is " Hey Spin I'm delighted that were going to meet you girls father at one of our camp fires, and I'm sure he is of a similar mind set. Please ask him what we should have on hand food wise, if anything and that both you and I want to make this weekend a memorable one."
That give Spinnaker a chance to show his maturity and Craig and his hosting sensitivities all once. Of course it could be all pearls before swine and the guy turns out to be a boor with a good looking daughter.