Welcome to the Disney Parks Moms Panel, James. Thanks for stopping by with your questions.
When an attraction (ride) is listed as "schedule unavailable" on the
Disneyland website, it is usually because that particular ride you searched is a seasonal one. For example, I just did a
search for "Haunted Mansion Holiday" and yielded "schedule unavailable" because it is a holiday-themed ride. The same is true for "Space Mountain" because at this time, with
Season of the Force underway, it is currently the Star Wars-themed "Hyperspace Mountain".
On the other hand, rides are listed "closed for refurbishment" when they need to undergo some TLC.
I hope this information is helpful for you. Please write us again if you have further questions, James.
Have a magical day,
Kiki