Thanks. I think Marriott Concierge might have said that as well in a dif thread, or maybe I was thinking of this one.
BTW - the only FS I know that explicitly states on their website that the exec lounge is closed on the holidays is the one in Israel, and it's basically the Jewish high holidays eve before & day of. I'd have to check the stickey to see if they provide brekkie coupons instead.
Cheers.