Hey there Cameron,
Welcome to planDisney and thanks so much for your question! It looks like you'll be at the Happiest Place on Earth in about two weeks from when I'm answering your question - how exciting!
Space Mountain is one of my all-time favorite rides at the Disneyland Resort, so I can certainly understand being bummed if it happened to be down for refurbishment during a visit. However, I'm happy to report that it will indeed be up and running while you're there!
When looking at the individual attraction page, you can check operating hours for a ride by clicking the date selector, so I can see how it shows "Unavailable" if you select April 14. However, I also like to check the
Hours & Events Schedule, which has an expandable section at the bottom that shows what will be down for refurbishment during selected dates - and Space Mountain is not on there.
The reason is that starting April 5, Space Mountain will receive the Hyperspace Mountain overlay in honor of the Season of the Force, which runs through early June! You can read all about that transformation and all the fun extras you'll get to experience during your visit during this fun season in
this recent Disney Parks Blog article.
Additionally, you'll also get to experience Pixar Fest during your visit if you stop by Disney California Adventure Park! You can read about the
10 Things You Need to Know About Pixar Fest in this Disney Parks Blog article.
Thanks again for your question, Cameron! I hope you have a fantastic time visiting the Happiest Place on Earth.
Have a Magical Day,
Greg