Party takes a pretty fast shower, more due to disinterest in the activity than because he knows Ghoul is waiting for him. Ghoul's the one who barged in on him, so he can wait. He does get his hair, though, and he's at the passable-for-polite-society level of clean by the time he emerges with dripping hair and a raggedy towel wrapped around his waist.

"Where're we goin'? Do I gotta dress nice?" Nice in this situation is just clothing without holes in it.