There is a stickey that lists domestic & int'l weekend lounge status at the top of this forum.

Taking a look at the main post, it's closed on weekends.

http://www.flyertalk.com/forum/13849211-post1.html

But that usually means reopening on Sunday evenings. Unless it's changed since December '10, you won't get breakfast on Sunday morning. If it does change, please report back in the stickey thread.

You can always call the front desk in advance & ask re: Sun night & breakfast coupon on Sun a.m.

Cheers.