I think as an advice card it offers you two things
a peek into what kind of job might be suited to you
And a peek into an attitude you need to change before you find that job.
What kind of job...
In the area of hospitality...could be anything from waitress to hotel deck clerk...a job where you offer or help others feel welcome.
Flight attendant, receptionist...etc.
Or a job where you offer an indulgence, like a spa, cosmetic sales, bartender, high end clothing, shoes ect...the list goes on.
The peek into your inner attitude may be that you need to drop the belief in a limited good...and go for what makes you happy...such a belief can hold you back because you see a job as tedious or a necessary evil instead of something that could bring you not only wealth, but happiness and fufilment.
The man in the 9 of Cups understands his true worth and won't settle for less.
And the card might be advising you to start thinking that way to and the universe will reward you with the right job situation.
Hope this helps you see the card in a new light.