Fran, the AAHA has guidelines on felines, but most of my cat friends get rabies because of the law and nothing else… taking them in for first appt of day to avoid issues, in their own carriers etc.
Here is the cat one from American Association of Feline Practitioners: http://www.catvets.com/uploads/HTML/VaccineSummary.html
Andrea, when I first began NOT doing yearly, I paid more each year for titers than I would have for shots. But as the evidence grew, I generally do them once after 3 yrs. Every one, even with autoimmune problem Sayblee, showed no need to revaccinate, but I still did the 3 yr just in case. Now, with Cara, I just had her 1 yr done and will most likely do a titre in 2 or 3 yrs. Unless it isn't good, that will be it for her, just vaccines every 3 yrs. Initially I had other vets who really guilted me about not doing yearly shots and how the LEAST I could do was titers.
On boarding, my own vet requires ONLY rabies and kennel cough so it has never been a problem. I keep hearing about people having vets claim they have to do the others, but call around. Of course, I have to admit that I have only boarded a few times in the last 15 yrs as I generally use a pet sitter.