If some of the concern may be from ticket holders expressing frustration from not being able to get into the lot during opening day, how about limiting the group blocks? Maybe it's just a perception because they seem to be right near the main bridge-walk, but sure seems like quite a bit of space is taken up by the radio stations or bars that put up the party tents, bring in bands, setup private porta-potties, etc. (Assuming that is still happening, since I am in the group that gave up opening day since the crowds have grown beyond control the last two years.)