I would say just be happy and confident at all times. It's your house and your the king of your castle. It is probably a little easier for me since my W and I are separated. Remember your W probably expects you to cry, mope around and be angry. When she does not see that it will make her say WTF! She might also question how much control she has over you.
When I know I am going to see my W I try to get in the right state of mind by listening to music that pumps me up, thinking about a new shirt I am wearing or a good workout that I had or some of the ladies that have hit on me.
I also learned that detachment is a process and not a light switch. I thought I was doing a good job of it until I got into the disagreement with my W this weekend. Her emotions impacted me which if I was detached they should not so I know I have work to do.