Shaving help

Taylor • "Lifes to short to be anything but happy"
So in about 3 days me and my SO are staying at a hotel for our one year anniversary. Let's just say its going to be a very special night and I want to look as good as possible for him. I need advice on how to keep "down there" smooth and razor bump free. I always shave but end up getting irritated and bumpy. And should I shave the night before, the day of, or what?