I was able to get the $10 credit for Market One purchases over the weekend, but I had to call the front desk and have them manually removed, since I was checking out via the app. In my prior two stays, I had to ask at the desk when checking out, as it seems they never add the credit automatically.
FYI, the mid-day snacks was cookies and assorted nuts on the one day I went. The lounge is supposed to be open 24/7, but only the coffee/tea is available in off hours and it was closed at 3AM on Monday, when I was trying to grab an espresso for the road.