A few questions about gameday parking?

I haven't been to a game this year and will being going Saturday and setting up our tailgate. We normally go out by the Box. This game because we are wanting to walk around and visit a few tailgates close to the parade grounds we were going to set up on that side of campus. I see on the map that highland is blocked off and you are diverted if you don't have a permit. What time do they block Highland? We were considering setting up somewhere around the Law school or maybe Parker coliseum I guess these areas are still open and free or should I avoid this area because of a sketchy element?