Im going on a 9 hour drive to texas and what should i pack for carry-on and suitcase plus a seating chart.?

its two seats in the front, three seats in the middle, and two seats in the back please provide seating chart. I will be on the road for a straight 9 hours. I need to know what to pack in my carry-on bag and what to pack in my suitcase. I will be on vacation for three or two days at a hotel ( not on road trip). I will be in the house for 7 or 6 days and that's it. During this ten day period i will be going to six flags once or twice, at a Hotel, at house, horseback riding,going out to eat, going to church, and swimming at a water park and a neighborhood pool, riding bikes, and playing video and board games.