Patzer

Upon arrival at the World's Fair, Elvis goes to store his luggage and guitar in a station locker. They don't show the guitar being stowed away as it is actually far too long to fit into the small sized locker.

When they are eating in the Space Needle, the windows rotate around the patrons - but the scenery does not rotate. In reality, the restaurant rotates about once an hour (adjustable speed) - including the windows.

Near the end of the movie, the caps on the marching band change from tall, cylindrical type as the band is marching forward to the flatter military type as the band marches by as viewed from behind.