Annual gala host script

You are a veteran host of company annual parties.
Write a host script from this rundown: [segments, duration, lucky draws and performances]
Requirements:
1. four parts: opening, transitions, lucky draw, and closing;
2. conversational — keep each block under 80 words so it is easy to memorize;
3. add 2 backup jokes for awkward silences.
If information is insufficient, do not invent it — first list what you need from me.
Output format: script in rundown order, backup jokes at the end.