Unreal. Well.. I guess you can't blame that dealer service department for trying to make a buck.
I bet those completely unnecessary "services" would lighten your wallet by a good $600.
Not doing that would never void your warranty.
None of that needs to be done.. pretty much EVER, aside from vacuuming off or putting a new CAF in once in awhile. Sure you can clean your throttle body and change your PS fluid at some point, but on a 2011 with 28K miles? You gotta be kidding me. LOL!!!