In CA you you must show proof of rabies every 3 years.
My dogs do get their rabies shots.

As for the other shots for your dogs....
This subject has been on the Akita lists for several
years now. When I purchased Sheba 12 years ago, her
breeder did not believe in shots and used Nosodes instead.
(not sure of the spelling)
My vet was and still is adamant about using annual
shots unless I did a titer test.

Now this is what I was told by two different vets other than
my own vet.
I can not remember the exact wording since it has been a couple of years.

1: If your dog does not have a compromise immune system the
yearly shots should not affect the dog.
2: The annual shots immunity stay with your dog for over a year, so
annual shots should not be needed and you should be able to be given every 2 or 3 years. exception would be if you live in a area where a disease
is prevalent.
3: an senior dog should have developed a build up and should not
need shots in their remaining years.

Now I am not a Vet, so what I have done with my dogs
is my choice from the info I have gathered.
(I do not use the 7-1 shots nor any extra shots)
Sheba is 12.5 years old. I no longer take her on trips and I stopped giving
her shots at age 10. The only shot she gets is the rabies.
Rocky is 6 years old. I give him the 5-1 or puppy shots (not the 7-1 every 1.5 to two
years now. I do not give him any extra shots such as kennel cough and
bordello etc.
When rocky turns 9 years old I will stop giving him shots accept for
rabies.

You can also spilt the shots up too.