Hi there, Zonia, and welcome to planDisney! I'm so glad you stopped by with your question - you've picked such a great time to visit the Happiest Place on Earth!
Over the next few months, there will be various
special Disneyland After Dark events hosted in Disneyland Park, and it looks like one of the events -
Princess Nite - falls on that March 9 date that you mentioned, which is why the park will be closing a bit earlier that night.
Typically, when Disneyland Park closes early for a special event, Disney California Adventure Park still operates within its regular operating hours. For example,
Disneyland After Dark: Sweethearts' Nite runs on select nights from January 31-February 16, and Disney California Adventure Park is open until 9:00 PM or 10:00 PM (depending on the day) for each of those nights.
I've found the most convenient place to keep an eye on park hours is the
Monthly Events Schedule & Calendar, but keep in mind they only set park hours 6 weeks out, so as of today, the calendar runs until late February. This means you should be able to see the park hours for March 9 appear on the calendar by late January!
Having said all that, the Disneyland After Dark events are incredibly special and include pretty unique opportunities for character experiences, special treats, and after-hours access to some attractions. These special events usually sell out quickly, but it looks
Princess Nite still has tickets available for March 9 - at least as of today. If it fits your budget, I'd highly recommend it! These are truly magical experiences.
I hope that was helpful, Zonia! Thanks again for stopping by planDisney, and please feel free to
write me back directly if there are any other questions I can help with as you plan your vacation to the Disneyland Resort.
Have a Magical Day,
Greg