In Jacksonville, Florida, there is a LFS there that has several display tanks that never get fed. The owner has mutliple fish and corals in each tank and says, "If the fish and corals don't eat what's on the reef, they don't eat at all!". While I don't agree with what he says, he did have very healthy fish and corals. Another friend of mine in Florida fed daily and never did a water change in 3 years. He had the largest fish I have ever seen in the hobby. Myself, I feed every other day and I have never had a problem.
Just find the right balance in your tank, experiment a little (and watch closely) and you will find what works for you. Like everyone says, less is usually better with aquariums. The less you mess with it, the better off it will be......