There's no way to do EVERYTHING at DIsneyland in just one day, or even two. So we pick and choose what's important to us. Sometimes the choice is made for us when an attraction is closed for refurbishing, or shuts down unexpectedly during the day and you can't get back to it for whatever reason. With some attractions, it's not a big deal. Other attractions are a very big deal and truly impact my level of fun for the visit.
What are your must do attractions? The ones that really have an impact on your overall visit? If you don't go on them, it's just not a real trip to Disneyland?
For me, I really feel like I've been incomplete if I don't go on Pirates of the Carribean, and Haunted Mansion. I love many other attractions, as well, but these are the two "non-negotiables" that I have to go on. ANd I don't mean the Nightbare Before Christmas overlay, either. The classic attraction. So for 4 months every year, I can't have a complete trip to Disneyland.
True, there are times when I can't go on one or both of these, but I really feel the difference when it happens.
How about you?