I just returned from a Disneyland trip after having not been in several years so forgive me if this old news. Last week was very hot but I noticed that the indoor line areas are not being utilized fully. Like at Space Mountain you spend most of your time waiting outdoors on the upper level and then a cast member slowly lets groups in and you walk right through the nice cool indoor line area instead of waiting there. I noticed the same thing on several other attractions. Do you know why they have started doing this? It made it much more unpleasant to have to wait outside in the heat although luckily it wasn't too crowded. I remember doing most of the waiting in the indoor parts when I had gone in the past.
BTW it was a great trip and we really enjoyed the Halloween party! We stayed at the Howard Johnson which was great.