Basically, all idols had to wait in their cars/the parking lot for hours. Waiting rooms were only provided to actors and 2 idol groups (not named who).
Catering was set up outside actors' waiting rooms and idols were told to use the shared cafeteria inside the building. Most ended up having to buy burgers and snacks from nearby convenience stores. Portaloos were also used due to unavailability of toilets nearby. Some groups ended up renting rooms nearby for waiting lol.
I know this year the circumstances are different but if you must hold an awards show even then, least you can do is make all the necessary arrangements Mnet