Smiley was the master of the Irish goodbye. When the crowds overwhelmed him he would hit the bathroom, then just walk out the door. Then he met Martha, the master of overstaying her welcome. Between them they make an almost normal couple.
Evenings start off well. They both enjoy parties and nights out. On arrival they make the first round as a couple. Then they split and wander at their own pace. Eventually Martha realizes that all the other guests are gone and the hosts are laying major hints of departure.
Then she goes to the car and wakes Smiley.