David's 1973 Alpha Beta List has an address of:This Alpha Beta supermarket opened in March 1965 at the Rossmoor Leisure World Shopping Center in Laguna Hills, coinciding with the opening of the adjacent huge retirement community of the same name
23541 Calle De La Luisa, Laugna Hills.
Locating this on Live-local, this is where the Laguna Hills Mall and Saddleback Hospital is.
Looking at a 1972 Historic Aerial, the mall was barely being built.
I also looked at the center on Moulton. It wasn't built yet.
The only market looking building is the Longs off El Toro and Paseo Del Valencia. But the Center doesn't look to be exactly the same.
Now the obvious is that building in the background. Could that be somewhere else in OC?
Since It had Roosmore in the name, I looked at the Seal Beach Alpha Beta and that's not it.