1) 0 minutes. You get in your car and leave.
2) 5-20 minutes. You wait a bit for the awards, eat some food.
3) 21-59 minutes. You wait for the awards and prize drawings.
4) 60-180 minutes. You wait as long as it takes to do all the awards and prize drawings.
Since most RDs don't have it together and take forever for awards, why wait?