Number 9, is the Sephira Yesod [foundation] on the Qabalistic Tree of Life. The Nine of Cups, is Yesod in the Suit of water, and 9, being also the number of the Moon, strengthens Water. Thus the stability is restored to Water. After its wobbly exclusions to Hod (left hand path) to Netzach (right hand path) , the suit of Water has now returned to the Middle Pillar.
Jupiter in Pisces is the Ruler of the 9 of Cups, thus adding a benediction that is more than sympathetic to Water. This is obvious, since Jupiter is the Planet of Chesed [Mercy} where water is in it highest manifestation. Plus, Pisces brings out the placidity of Water. Here is True Wisdom fulfilled in Perfect Happiness.
As you can see upon viewing of this card, there are nine cups arranged into a square overflowing and filling one another.Here we have the most benevolent aspect of the force of Water....a pleasing state of stable and sparkling emotion.
When this card is thrown during a reading, the querent is or will be experiencing, complete success, pleasure and happiness for the next 9 weeks, or 9 months Complete and perfect realization of pleasure and happiness as wishes are fulfilled. There can be some vanity and conceit here, but it is good- natured..
This card suggest the querent is high minded and not easily satisfied with small , gossipy, limited ideas. Such a person may be maligned because of their self-assumption but the querent, being of a good generous, sometimes foolish, nature, ...the maligners tend to look overly critical.
The number 9 is also the number of completion. Happiness, is a sensationalizing of success and is a hard one to find any negative connotations for. This is a pleasant card to have in your reading.
Thank you for your interest and comments. May you live long and prosper.