I'll tell you what to do. Go to your future father in law, pop him in the teeth and in the same motion grab him by the throat.If you do this correctly and without hesitation you will have his complete attention. Torque his neck to about fifty foot pounds. Look him in the eye and tell him if he ever schedules a family vacation in Oct. again he will be taking a three legged walk to the local emergency room and you will be hopping right behind him. Reach up and pinch his cheek like his grandma used to do and walk away.