There is lots of parking. Nothing to worry about. There is a parking garage between building 4 and 5. The thing that people squawk about is not getting a spot right in front of the door or having to drive up a level or two in the garage. For some strange reason people think this equals no parking.
My last stay at WBC was for 13 nights and never once did we have an issue getting a spot. We stayed in building 5 and preferred to park in the garage as it kept the car in the shade. Parking in the garage means you will have to walk about 30 seconds further.