Here is the info off of mouseplanet.com
New Play 4 Days pass Southern California residents (zip codes 90000-93599) can purchase a new four-day ticket for just $79. The ticket is valid for four admissions to either
Disneyland or Disney's California Adventure park, from June 1 and September 30. Residents can purchase just one ticket per person, per day, so your out-of-town relatives must buy their own, regular-priced admission.
The tickets can only be used at one park each day no park hopping. We understand that you can use two admissions one to each park on the same day, effectively making this a $79 two-day park-hopper ticket, which is a $20 discount from the regular adult price.
The tickets cannot be used at Disneyland on June 28, July 4, 5, and 26, August 2, 9, 16, 23, 29, 30, and 31. There are no blockout days for DCA. Tickets are non-transferable, and you must show a valid ID each time. These tickets can be applied towards the cost of a Deluxe or Premium Annual Passport (but not a Southern California Annual Passport), as long as you upgrade when or before you use the fourth admission.
Also, my friend just called DL and they told her that the adults had to show valid So Cal ID and the children without ID would have to be "vouched" for by the adults that they lived in So Cal.Also, it is 4 one day (non park hopper) or you can use two tickets in a single day to go to both parks.