How is this going to work anyway? APers get MagicBands or special bracelets to ride stuff? Is there going to be an announcement that regular guests have to leave the park?
The biggest issue is the lines, for the average guest, if APers are turned into vampires that only go to the park around 9 p.m. to midnight, then this will alleviate this problem.
Remember, most casual tourists who come for a once in a lifetime experience have little kids, can't see them wanting to be in the park past 10 pm.