Shari:
I usually give the advice for folks to visit the
Magic Kingdom on a weekday to avoid the addition of local crowds, but with Florida blackout dates and the Independence Day crowd that will be growing by the end of your vacation window, I recommend going on Saturday, June 27. My favorite crowd-predicting website at www.touringplans.com agrees with my gut. The hours are the same every day of your vacation but the difference that may impact your wait times for attractions are the crowds.
There are Evening Magic Hours that Saturday from midnight until 2 a.m. but only for guests who stay on-site. However, I have found that
Evening Magic Hours do not increase a crowd or affect wait times like
Early Magic Hours in the morning, so you should be good.
Wishing y'all a magical vacation!
Whitney