I liked this special but I was especially mad at Peppermint Patty and Marcie for screwing up Chuck’s chance to dance with the girl of his dreams and then berating him later. I was especially mad at Marcie for acting more like PP which as you said, is TOTALLY out of character for her.
I hope you review more Peanuts specials in the near future. With Spring coming two suggestions come to mind – It’s Spring Training, CB or There’s No Time For Love, CB.
I did a little digging and found that most of the scenes involving Charlie’s crush on the Little Red-haired Girl come from the early 60’s including the bit where Lucy gives her back her pencil.