For some reason, this is a recent change in their software. I had originally added it to my plan, and it was giving an estimated wait time (which I know was a guess). But then, one day when reviewing my plan, suddenly it started giving me that error and I was forced to remove it entirely from the plan…which is annoying. Wish it was just a warning, but kept it in for planning purposes.
Ultimately, if neither are open, it is no biggie. My wife and I are doing our Anniversary trip just the two of us the following December, so we’ll get to do both then.