Good question. Unfortunately in the case of a major earthquake, Disney doesn't appear to have a good answer.
Originally Posted by WoC 95
From Al Lutz' column "Timelines and Faultlines"...
...Anaheim has never conducted a park-wide earthquake drill for its Cast Members, and the few minutes of earthquake training Cast Member’s receive when they hire in is so basic and so vague it comes across as rather meaningless.
...the response for a moderate or severe earthquake is for all Cast Members to abandon their work locations and go to a designated “Cast Assembly Area”, while the park visitors are mysteriously directed by seemingly no one to move to separate yet unlabeled “Safe Havens,” which are open areas away from buildings.
If the earthquake response is carried out accurately, the employees and customers would be segregated into separate assembly areas that are only identified on a handful of dusty maps posted backstage.
Not a single word is mentioned in any of the Cast Member training about how to respond to panicky or injured visitors, or what to tell them, or where to direct them.
The salaried park management have also had just a few minutes of vague and useless training in earthquake response techniques, the same as the average ride operator or shop clerk got, so don’t look to the guy wearing the Dockers and the earpiece for useful direction or assistance either.
...There are vague plans to evacuate the parks along designated corridors in the strong earthquake scenarios, dumping up to 100,000 people at one time out into the Esplanade and/or surface streets around the parks.
The tram and bus systems back to the parking lots would be shut down immediately and everyone would be expected to walk back to their car, even though the official plans call for the 10,000 space Mickey & Friends parking structure to remain closed (if it's still standing) for an indefinite period of time until it can be inspected by engineers. Your best bet, if a large earthquake strikes at Disneyland, is to calmly gather your family and walk directly to the park exit. It would be wise to not park in the troublesome Mickey & Friends structure, and instead park in the safer Toy Story surface parking lot that has no plans to shut down indefinitely after an earthquake. Don’t bother with the Toy Story buses, just walk the five blocks down Harbor Blvd. and then try to drive away.
As things stand now, what you shouldn’t expect is a lot of information or thoughtful response from the hourly or salaried employees at Disneyland after anything above a “mild” earthquake. In the absence of any real training or comforting instruction, most Cast Members at all levels have simply come up with their own mental plan to quickly get back to their car and get off property.