There is no season pass parking, but all of the parking is usually pretty convenient.  There is early admission for season pass holders at 9:30 with one area open early each day.  See the web site for details.   
 
The longest lines are for Superman, Two Face, and Roar.  When Batwing opens of course it will have long lines.  The park is small enough that nothing is a long walk.  I would catch a couple of quick rides on Superman, cut back to Two Face if it is open (Often opens late), catch a quick ride on Wild One, then cut over to Roar.  After Roar catch a ride on Typhoon Sea coaster, a unique water coaster if it has opened (Opens late when it is cool).  Mind Eraser and Jpker's jinz are almost always near walk ons. 
 
If you get through this early in the day, (I did it all by 12:30 on a light day recently) go back for rides on the woodies after they have warmed up.  If the park is open after dark, be sure to catch a ride on Superman in the dark.