Most people here seem to believe in 3 year intervals for the brake fluid, regardless of mileage.
Dealers always "suggest" things that are beyond what the manual says is needed. It helps their profit margin. Most of these things are extras or things you can do yourself. The cabin air filter is very easy to do yourself. Watch the videos by fellow member Roadster, which are located in the "sticky" under the Clinical Rounds forums, near the top.
It is the FIRST thread in this forum, the one in which you posted...
Here it is again: