You can either visit one of the parks or both the parks, depending on the ticket you purchase.
Disneyland Park (Approx. 7 hours)
Start with the Sleeping Beauty Castle and explore the themed lands (Discoveryland, Fantasyland, Adventureland, Frontierland, and Main Street US..A.). Dedicate about 5–6 hours for rides, shows, and walking through the park.
Walt Disney Studios Park (Approx. 3 hours)
After exploring Disneyland Park, head to Walt Disney Studios Park for 2–3 hours. Prioritize key shows and immersive experiences, and enjoy one or two major rides.
Disney Village (1-2 hours)
End your day in Disney Village for shopping or dining.