A while back someone posted a shortcut idea from the Sheraton Park. I believe it might have been through the Toy Story lot. I cannot find the thread. Does anyone else know?
I believe the Sheraton Park is adjacent (across the street) from the Toy Story parking lot (on Harbor). You just need to walk across the street and catch the free Disney shuttle buses that go back and forth between the parking structure and the front entrance to Disneyland.
Because you hvae to walk south on Harbor, then cross, and walk into the middle of the Toy Story parking lot, it's not a great short cut. It would probably only save two hundred yards of walking, and take about 10 minutes. Then it takes another 10 minutes to board and ride the shuttles. Saves some steps but takes more time.