you wont have Active suspension.. only 'Active' soarers came with them
However,
TEMS also stiffens when you apply the brakes or hit a corner hard or you can set them for track days so the suspension and steering is firm.
The power mode would work the same for TEMS too by stiffining the suspension.. i had the same on my windom just the air suspension gives a better ride quality.
I do not doubt you on the air suspension.. I know very little about the Aristo... they have absolutely everything. Very nice piece of kit!