There's a sad sort of clanging from the clock in the hall...

[Christmas]

When I've drunk and/or eaten everything and had my way with the host.

EDIT: ASSUMING IT IS A WOMAN

When NANNY MANUS arrive at the party, everyone leaves.

[-N-]

Work parties: After the food is eaten, before they hit the bars. These guys are too old for me to hang around with all night.

Friends: Most things you could almost call a party that I attend are at my place anyway.

Word and word.