Called before I went and the lady (I think it was Elizabeth) on the phone gladly answered all my questions. They only take CASH for currency exchange. They had my currency available and the exchange rate was waaaaay better than the bank!
As the other reviews mentioned, parking is underground. Just make sure you park close to the elevator/stairs on the TOWER side of the garage or you're in for a longer walk (if you park on the Plaza side if the garage).
The place was easy to find, its right at the entrance/lobby of the building. But if you're coming in from the garage, your entry is on the side of the building. Keep going in until you see the lobby and its right there on your right.
Service was prompt, I was in and out in about 6-8 minutes or so since there was no one in front of me. This will be my go to place for ForEx transactions.