3 adjectives to describe clientele

"With my methods and experience one ought to acquire an extensive clientele.

Naturally a courtier, taking to the intrigues of the royal court like a duck to water, making enemies on every hand as well as friends, and with a fastidious and impatient clientele, he yet found time to dabble in the wonders of the newly perfected microscope and to speculate upon the meaning of the novelties revealed by it in the tissues.

Independent of hospitals and almshouses, but subjected to the surveillance of the State, it comprised all the conditions of comfort and salubrity essential to establishments of this description designed to receive an opulent clientele.

3 adjectives to describe  clientele