We do only rabies here and usually the annual. Some Vets don't like the 3 year for cats. But sometimes that is all they have at the HS. And Isla doesn't ride well so she got a 3 year.
They had all the kitten series first though.
Vacs used to make Koala Blue very sick. I had to split his up into 3 seperate visits 2 weeks apart. He still wouldn't feel up to par for a couple days after a shot. I think he was about 6 when we went to just the required rabies on the advice of our Vet. So we have been on that program for 15 years now.