I do remember this. They used to have City of Anaheim Nights - went to one of those in early 1980 (Dad worked and STILL works for City of Anaheim).
Also, my friend Rebecca and I went in January 1986 on a rainy rainy day.....and Disneyland was going to close at 6 pm but then it cleared up and there was some big company function and for some reason, Disneyland ended up staying open until Midnight - and guests that were in the park that day that were STILL in the park, were allowed to stay.
Very cool (and a tad wet). Good times!