I agree. This is such a strange post. My wife and I spent ten minutes discussing it's oddness at breakfast this morning.
Long story short, it's a vacation, so the normal rules that govern our everyday lives shouldn't apply. Everybody does his thing.
I'm in my 40's, and when we travel with my parents, we spend most of our time with them, but then we also spend some time alone, or just with our kids.
Odd post.