What a piece of cake... can't imagine a better, easier way to exchange currency. Went there on my lunch hour, walked right up to the counter and was helped immediately by a very nice woman. The transaction took perhaps three minutes max and I was out of there.
And, most importantly as others have mentioned, the actual exchange rate is outstanding - far superior to the rate quoted to me by the exchange kiosk in the Fashion Show Mall.
I couldn't recommend more highly, and I will certainly return if I need foreign currency in the future.