I think this is one of those confusing holidays that sneak up on folks. I know some people in my office were confused about whether we'd be open or closed. I think there was confusion here too because someone mentioned that their guide would be working -- but the guides are seperate from MS. And, as mentioned, folks outside the U.S. are likely to be caught off guard.
It's great that they've started listing the days they're open and closed in the planner. They never did that in the past. It would be nice if they'd put it on the website as well.