You know it’s getting close to the point of leaving the party

When all the faces begin to look familiar and the same conversations have been had a few times.
The food and party favours no longer look appealing, and you’ve achieved that pristine balance of tipsy wonderful without being boorishly drunk.
Sure there’s still a chance of meeting someone interesting to chat with, but the odds are diminishing and reruns of Seinfeld are calling from the comfort of your bed…