The Metropolitan Lounge currently closes after the last long-distance train leaves (around 8 pm). I don't know what time it opens in the morning, but it's probably not before the first inbound LD train is due in.
It certainly isn't open the entire time the station is open, though I've never seen any official hours posted for it.
It certainly isn't open the entire time the station is open, though I've never seen any official hours posted for it.