There are some other little Yamaha tricks also.
Pressing three adjacent keys (while in fingered mode) stops everything except the drums. The Arranger starts again when you hit a chord.
When you hit an ending or intro by mistake, pressing a variation button gets you out of it. If your Yamaha has auto-fill, pressing the variation button twice quickly will change variations without fill. You can use Intros as breaks (not possible on many other brands).
You can start a song with the Ending (press a Variation as the last part of the Ending plays). Many people may not know that pressing plus and minus buttons at the same time gives the factory default settings for most functions (tempo, transpose, etc.).
Also often overlooked is the direct access button. Press the DA button and then the button or pedal that you need help with. For example to get to Fingering Mode, press Direct Access and the AutoAcc button. To change footswitch settings, press DA and then the footswitch.
I've noticed that the Vocal Harmonizer on the 2000 will work if you press a left hand chord, even when the autoacc. is not running. Previous models didn't do this.
On several PSRs, pressing the style category button repeatedly will change pages of style listings. Same with sounds.
You can program the Talk button to give you a totally different mic sound. It doesn't have to be used just for Talk.
These are just a few things that come to mind that may be helpful.
DonM