When I parked there one morning in late April, traffic in the lot was being merged from 2 different directions (we came in from the boardwalk entrance), everyone parked in the same place. The closest lot was closed, it was being paved so we had to turn left and swing around to one of the back lots. If they were using separate lots, I think the boardwalk entrance would use the closer one. MGM's lot doesn't seem as big as the others, I don't think it matters where you park, the tram services all areas.