AK on July 31

Was able to get a FP for FOP on Tuesday, July 31 late morning. Which, of course, made that day our AK day. Working on the touring plans - that day is a CL10. No other days around it. None of the other parks. Just wondering if I am missing something about that day? Any place I can look to see if something specific is happening that day that has made the CL spike?