foolMoon
Here is information I got from "The Western Mysteries" book (by David Allen Hulse) about the 7 of Cups symbolism and its origins. It says The Golden Dawn title for this card is "Lord of Illusory Success", and had been defined by S. L. Mathers as a variety of vices and illusions, in line with the astrological attribution of this card as the third decan of Scorpio as Venus in Scorpio.
Full meaning of the 7 of cups symbolism
==========================
Woman's head (from head of The Empress)- Venus - Lust (fornification)
Veiled Figure (from The High Priestess and veil) - Moon - Deception (in love and friendship, fantasy, eros in lurid nature)
Snake (from Serpent around Magician's wrist)- Mercury - Lying (or Error)
Castle (from The Tower on Mountain)- Mars - Promise unfulfilled (wrath)
Jewels (from The Wheel of fortune)- Jupiter - Vanity (Success gained but not followed up)
Wreath and skull (from dancer in The World)- Saturn - Illusory Success (victory followed by deception)
Winged Dragon (from Horse off The Sun)- Sun - Drunkenness (selfish dissipation, vegetable drug under the Sun's rulership, which is alcohl)
Full meaning of the 7 of cups symbolism
==========================
Woman's head (from head of The Empress)- Venus - Lust (fornification)
Veiled Figure (from The High Priestess and veil) - Moon - Deception (in love and friendship, fantasy, eros in lurid nature)
Snake (from Serpent around Magician's wrist)- Mercury - Lying (or Error)
Castle (from The Tower on Mountain)- Mars - Promise unfulfilled (wrath)
Jewels (from The Wheel of fortune)- Jupiter - Vanity (Success gained but not followed up)
Wreath and skull (from dancer in The World)- Saturn - Illusory Success (victory followed by deception)
Winged Dragon (from Horse off The Sun)- Sun - Drunkenness (selfish dissipation, vegetable drug under the Sun's rulership, which is alcohl)