The Del Mar Fair has been renamed “The San Diego Fair” and calling it “San Diego” just sounds wrong given that it’s held at the Del Mar Fairgrounds.
Another one is Qualcomm Stadium, which to me will always be Jack Murphy Stadium.
ArcLight Hollywood will always be just the Cinerama Dome to me.
Grauman’s Chinese Theater was renamed Mann’s Chinese Theater for a few years, but now it’s been re-renamed (un-renamed?) to Grauman’s Chinese Theater. I’ve no right to complain about that one.