According to Monday in the Parks:
Disneyland has designed a special summer Southern Californian (and Baja California, Mexico) offer to be available if purchased in advance at selected locations, basically Southern California Grocery Stores. (Vons, Ralphs, Albertsons, Stater Bros., and Gelson’s). Based on prior promotions, this offer will also be available at other locations and Disneyland.com.
Some key points.
These tickets go on sale June 16th, and not valid until that date.
The first day of use must be between June 16th and August 30th, 2008. The Summer Fun Pass is Blocked out July 4th (cannot use any of your three days on the 4th).
You then have 45 days to use the other two days. These tickets are ParkHoppers, so you can visit both parks on the same day.
The tickets are clearly marked that each person that uses a “Summer Fun Pass” must have proof of living in the Southern California/Baja California area. (Southern California residents within ZIP codes 90000-93599 and Northern Baja California residents within ZIP codes 21000-22999.)
This is one of the better Summer Discounts that Disney has offered to Southern Californians in a while. It is a 3 day ParkHopper with a longer window (45 days instead of the normal 13 days after first use) and you can apply the Summer Fun Pass to any Annual Pass (of course, the Annual Pass will be backdated to the first day of use of the Summer Fun Pass). But since the Southern California and Southern California Select Annual Passes are blocked out most of the summer. Somebody could buy the Summer Fun Pass, get three visits during the summer period, and then upgrade to a Southern California AP for the rest of the year.