Congrats!
I would do the following before driving your new truck off the dealer's lot:
- Check all fluid levels
- Check tire pressures
- Check lug nut torque
Our current 4Runner had tire pressures varying from 25 to 55 psi when delivered. What I missed was that the roof rack crossbar "thumbscrews" were less than finger-tight. Two fell off and were lost on the way home! Expect the worst from your dealer: Treat the delivery process as a learning experience, and you and the truck will be the better for it!
Regards.