Hi there, Jocelyne , and welcome to planDisney!
I always get excited to answer questions where I get to deliver good news: the special offer of the
3-day, 1-park per day tickets for SoCal residents runs through May 25, 2023! The one caveat here is that they must be used on weekdays - so weekends are not available. This means you would not be able to make a
theme park reservation using this ticket offer on Sunday, March 26, but March 27-28 would be options (subject to theme park reservation availability).
I also wanted to note that these 3-day, 1-park tickets don't need to be used within
13 days of first use, like standard tickets. You could visit March 27-28 and then decide to use your final day on a weekday in late May if you wanted. Just as long as they're used on weekdays between now and May 25, 2023. Again, I wanted to stress also the importance of making those theme park reservations as soon as you have your dates in mind as well, since those are also subject to availability.
The end of March will be such a fun time to visit! Not only will
Mickey's Toontown be reopening later this month, but the
Disney California Adventure Food & Wine Festival also returns starting March 3! The
Disney Parks Blog just released the foodie guide for this event - I love to use these as a checklist to make sure I can try all the delicious food and drink options.
I hope you have fun visiting the parks, Jocelyne! Come back and see us if you have any other questions we can help with.
Have a Magical Day,
Greg