The Sea God was sufficiently appeased by the offerings of fine wine, ambrosia, and delectable cheeses - and pleased as well by the many drowned horses offered up to him in sacrifice earlier on. Nothing pleased this King quite like the sight of a drowned horse!
Except, of course, the notion of wedding lovely Amphitrite. Paul facepalmed at the thought of dead horses appearing on his doorstep but was quickly punched in the face by his immortal counterpart, a God of epic proportions.
"A glorious affair it will be, mighty Kosmetas," Poseidon assured his brother, fingers finding a way to the goblet of mead, lifting the relic in a toast. "With friends and family in attendance! Hades with his Persephone, and I would expect as much. Have you conversed with the underworld Queen's mother as of late?"