@Trotter Driving --- if your surgeon did not say yes or no - first try sitting in your car and moving your legs through the motions of driving (without starting the car). Can you easily move legs as needed? Even if an emergency maneuver were needed? Are you taking narcotic pain medication during the day? Narcotics can interfer with your reaction times and cloud your perceptions. If yes then don't drive. If no - or only taking one at night - it's OK to drive.
PT - most hips do not need PT -- walking really is the best exercise. But sometimes one does need some PT for motions other than walking and climbing stairs. If you have trouble getting that left foot onto your right knee then PT could help with that type of motion. If you limped for a long time before needing hip replacement your muscles and tendons in both legs are going to be out of condition. It can take quite a while to gently recondition those parts of your body. Also check the bottoms of shoes you wore frequently before surgery! The wear pattern on the bottoms of soles and heels is the old limping pattern and that is NOT good for new hips. So if there is a visible wear pattern -- get new shoes or have the heels and soles replaced.