Parking is now $12 for cars and motorcycles, and $15 for RVs.
You can also park in the Wal-Mart parking lot close to Kirkman Rd, and take the bus (Link 21) over to Universal. It drops you off right at the base of the hub, about 1/2 a mile closer to Citywalk than if you had parked in the parking lot. When you are done, just take the same bus back to Wal-Mart (make sure to ask the driver if it is going in that direction). This way, you will only have to pay $2.50 for a fare, instead of $8.