What is there to do in the Disco

Hint 1 of 5:

It is important that you meet someone here.

Hint 2 of 5:

You should be here at night, before 6:00 am. Preferably when you land.

Hint 3 of 5:

Dance with a girl named Lydia. The Love Meter (page 59) applies here.

Hint 4 of 5:

Keep it at the top. Eventually, the meter will drop by itself.