Javier Pacheco said from 1968, Fritz practiced in a place called "Italian Gardens", which was a banquet hall for weddings and events. If this is a late '60's shot and it was taken at a wedding, that could make sense.
Found this
info about the place:
San Jose landmark: the Hawaiian Gardens nightclub. Grizzled old San Joseans might remember when the club was named Lo Curto Gardens--in the 1930s. At some point, it was renamed Hawaiian Gardens and remained so until 1966. The last incarnation was Italian Gardens, a banquet hall specializing in weddings and Lockheed Christmas parties. All that remains is an outdoor lava grotto--or so I have been told.
Fyi, a housing development has been built over those grounds now. It's called the Italian Gardens Family Apartments. Website says:
Located in the City’s Tamien Station Specific Plan Area, this project was constructed on the grounds of the former Italian Gardens Banquet Facility. Beautiful gardens from the facility were maintained. The historic Locurt house serves as a community room for the residents. This development was designed in a collaborative fashion with the developer of the Sienna Senior Apartments.