First gig preparation

Hey guys, I’m finally booked for my first “gig”. It’s a party with 100+ guests, young crowd.

As of right now I spend most my time preparing tracks with hot queues so I know when to blend and what not.

Does anyone have some advice? What to play, how to manage people requesting, to drink or not, basically anything that will help.

How many tracks should I bring for a 3 hour set?

I’m 22 yo and have been playing bedroom on off for about 2 years