The mugs are only good at Roaring Forks. It was not always like that, however. Our first stay at the WL in 1998 we were told we could use the mugs at WCC. So we took them along to WCC and the servers filled them with no questions asked. I think it was the next year that the rule changed. Frankly, it was a pain bringing the mugs to a TS restaurant. It also felt awkward for us. We only did it because the CM at Roaring Forks told us to take them along to WCC if we palnned on eating there.