Hi Nancy, welcome to planDisney!
Thanks so much for bringing your question to us, I'm happy to help!
It seems like you're referring to a
standard one-day theme park ticket. If that is correct, yes! You can absolutely exit and reenter the parks at your convenience. But something to keep in mind, reentry is subject to theme park capacity. If a theme park has reached max capacity, reentry may be temporarily disabled until capacity reduces. But not to worry, I've only seen Disneyland Park reach max capacity once, and after about an hour, reentry opened again and I was able to reenter!
And before I let you go, have you heard the amazing news that many beloved experiences have returned to the Disneyland Resort? The traditional character meet and greets have returned, which means Mickey and all his Pals are ready to give out the best hugs and sign your autograph books! AND many of the fantastic nighttime experiences are back as well!
The Main Street Electrical Parade,
Disneyland Forever fireworks,
World of Color, and my personal favorite,
Fantasmic! have all returned! I personally can’t wait to return to the parks to experience all of this again!
See ya real soon!
Jin