Be careful. They used to be much better, service is deteriorating quickly.
Their buses are very bumpy. Many drivers are very friendly, but some are not at all. Parts of the lot are paved and other parts are gravel, because of this my car is very dirty when I come back. They offer a 'service' to wash your car before you return, I find it ironic since sitting in their lot is what makes it dirty. I shouldn't have to pay to receive my car in the same condition I left it in.
On a different trip a few weeks before, I also paid extra for their valet service and watched as a bus drove right past and left for the terminal. I was left waiting outside longer than even when I self park.