Fithian

Do these services cover the bi-annual brake fluid change?

I could do all of these things myself, but at 77 I gave up about 10 years ago.

Force-1

Yes, initial Audi Care covers 2 flushes.

snagitseven

Any of the Audi Care Select plans will also cover at least one bi-annual brake flush.
I would also add that not everyone is inclined to do their own service nor has the time to do it themselves. If you plan to have the dealer do the scheduled maintenance, Audi Care is a less expensive option than paying for each service.