Since your ticket allows access I would definitely stop in. We went on a 2hr50 layover which really resulted in only like 1h45 of good lounge time. I could have used 4hrs or so, but we did manage to take a nice tour of the lounge and sampled some lobster and champagne. Champagne was good. The lobster was a bit of a let down and would have been disappointing if i hadn't had decent lobster on the flight in and good lobster on the flight out to Dulles. Would have liked to have tried the sushi bar, but hopefully there will be more Al-Safwa visits in my future.