Disneyland is a Deathtrap in a Zombie attack. This is a pure ZBA zone. Tightly packed and ridiculously slow moving - humans are turned into cattle. How many times have I gotten stuck behind a slow moving pack of tourists blocking entire pathways (meant to allow 15 to 20 people walking side by side)? I can't count that high. Thankfully the other half and I are adept and intimidating these slow mover out of the way, and finding gaps large enough to pass through.
This reminds me to bring up a warning to said slow moving shamblers - In a zombie outbreak I just have to be faster than you are. Second note. I already am faster so enjoy the horde coming behind me.
I try not to be too paranoid about Zombies, but for anyone who has waited in line for the Rodger Rabbit Ride - understand the fear that dark shadow and strange noises can bring. That is one creepy kids ride. Typically Zombies based on disease will find that Amusement parks are probably some of the greatest places to strike. While they can't make a choice to go there more than any other - the combination of limited escape paths, crowded conditions, and screams and loud noises already being common create a disaster scenario. The crowd will take time to have the warning filter through. Even longer will be the tossing away of disbelief. Most won't believe it until the zombie horde reaches them. At that point - they don't have many options for escape.
Strangely enough, Two locations appear to be safer than the others - Tom Sawyer's Island (since it is surrounded by water) and Toontown - Since it has a full separating gate. Additionally, these are two of the further points from the entrance of the park, so they will have the longest warning of any point. Of the two locations - Toontown actually could survive awhile since there are basic refreshments available. However there are dozens of back-access points for Toontown - each one is a possible breach point for the horde of now undead vacationers massing at the gates. I would rate this one as having potential - but being much riskier.
Tom Sawyers Island, surrounded by a narrow moat, has a number of spots you can hide in, and if the Zombies are unable to swim (cross your fingers) you can make quick rush's for supplies at the Hungry Bear restaurant across the water. While you will get wet on the way there - Hungry Bear's is right on the water front, and is next door to the damn Canoe rental. Coming back with supplies is MUCH easier if you have a method to transport it. Brush up on your canoe skills prior to attempting this trip. Zombies may try to attack you in the water. Just pray they cannot.
However through all of this, I try to maintain my sanity. I will survive and continue to write this. As I walk the park I may just be spending my time calculating how fast I can get to Tom Sawyers Island - at least it is near my favorite Restaurants in the French Quarter. Thank god for that....