Because of the state-of-the-art technology, you can go home very soon. After resurfacing surgeries like unicompartmental, patella-femoral, and bicompartmental most people can go home after 1or 2 days.
You have to go home in a car. Sit in the front near the driver's seat. If you don't have an elevator or lift at your house you should go in an ambulance or else climb cautiously on the stairs.