I highly recommend it! My Bfrnd and I just took the tour over Valentines weekend. though I've been life long Disneyland passholder my bfrnd has only been a few times in his life. It was just over 3 hours but it goes by so fast. It is very informative, loved listening to Mr. Walt Disney himself and you really get a sense of 'Why' Disneyland is so special.
Hope you enjoy the tour!!!