Vacation?

We are leaving for the mountains tomorrow. I was looking forward to the trip until I realized that my in-laws would be with us slightly over half of the time we will be there. Now, this is their new mountain house and I can't very well say, "no, we want to be alone," but at the same time, my mother-in-law told us that we could have the house to ourselves whenever we wanted so I was looking forward to some downtime. Somehow one night with them present has become three.

So J and I are having a disagreement. I say it isn't a vacation if in-laws are present. My reasoning: I can't wander around in my pjs, I have to be on guard as to what I say, and I have to plan meals and mealtimes around them. NOT a vacation. J says it is a vacation because we are away. If we invited my parents, I am guessing he would feel differently.