I got to the Livingston Campus at 6:45, and took Avenue E to Hospital Road, parked in the Green Lot and was in my seat before tip off. So I am not sure what happened to some people.
That said....there are only two lots now. So on the way in, I cannot understand why they do not make Hospital road the entrance for Green Lot Only (regardless of whether you come from Avenue E or Sutton). And then make Rockafeller Road for Yellow Lot Only. Then have two entrances to each lot, so everyone coming down Hospital from Avenue E would use the first entrance to the Green Lot and then everyone coming from Sutton down Hospital would use the further entrance to the Green lot. Same for Yellow. It would simplify so much, and be so simple to implement.
They already do this for football (Hoes Lane for Blue and Yellow, Sutphen for Green and Red).