Hookup and unhook in a flat area away from traffic. When you hurry is when you will make mistakes (like leave the hitch pins on the front bumper:S).
Be wary entering gas stations and other parking areas. You need room to pull in and pull out. Now days, if you have a tablet or smart phone, you can satellite view the area and plan ahead. Often we hitch up after fueling just for that reason.
We have a box for the towbar accessories (cables and cord). In it is also a pair of work gloves, spare hitch pins and a check list on a 3x5 card. (We also use a check list for loading the MH).
In some campgrounds, if you tow your car in, there is no extra car charge. If you drive the towd in, pay for the car.
Norm