How are you available when you are traveling and visiting your family?
I think "working from home" means something different to different people...
Some of my coworkers view it differently though and it becomes difficult to collaborate because they are running around doing other things during core hours. It is kind of an internal battle because I don't want the privilege taken from me.
"Vacation" travel: Haven't done this myself (outside visiting family) but have had colleagues who did it without issue. Available and worked in the day, did vacation things in the evening presumably.