Is there a shuttle bus pick up and drop off to and from the airport?

Yes, usually the shuttles run every 15 minutes. Otherwise no one would park there.

Yes

Yes. Wallypark is decent. I use them often because they're cheap. Use self park, not valet as they have a tendency to misplace/lose your vehicle when they valet. I didn't really believe that at first when I read some of the other reviews that said the same thing, but when I experienced it twice within a 30 day period, I can attest that their valet service is unreliable.