Frequent cleanings are nice though. As an avid tea drinker it's nice to have white teeth again once or twice a year. The insurance covers most of the cost, so ¯\_(ツ)_/¯.
I also drink a lot of tea and coffee, and unless I pay extra, I don't get any whitening.
I found that getting the fluoride paste applied at the end of each cleaning actually helps reduce the tea staining. (My teeth used to stain pretty bad)