We Need to Talk

A group of us are going to visit a wonderful Clydesdale farm in Missouri in April. I bought 7 of these blanks cards and personalized each card with the directions to the farm and estimated time to travel. This group of ours is like herding kittens. My hope is that each couple will actually save the card, read the directions and show up on time, all without me reminding them. How can a person ignore this beautiful card?