We never sat and ordered directly from the lounge area tables, but I assume guests do, because there is a lounge menu (separate from QS counter). I do not know if the
DDP covers lounge fare/appetizers (definitely not the booze).
However, it does cover the menu at the QS counter (the counter is located outside of the lounge).
This was our experience - at the QS counter they will ask if you want your order to-go OR served at your table.
To-go - you wait at the counter until your buzzer goes off and food is served in nice cardboard boxes. In this scenario, we chose to eat at the lakeside tables (away from the lounge) or in-room.
Served At Your Table - you seat yourself in the lounge or lakeside tables. They will bring it to you on restaurant quality plates, cloth napkins, and flatware. The lounge staff will check on you and bus your table. In this scenario, we chose to leave a 20% tip (we asked and they noted that is was graciously accepted).