Having gone to school there, if you expect a really large crowd, expect the bypass off the exit to Alumni to move very slow. I'm sure there will be traffic control but it is still slow. While you can get off at the "first" exit north of Richmond and come in that way, I personally would just go the main eastern bypass exit 87. If I were you and meeting people coming for several different directions is to meet at the Dick's/TJMaxx, Meijers, etc. shopping center on the other side of the interstate. Park all your cars there and take only one vehicle over to Alumni. Have fun for anyone going. Back in my day, I could have walked there from my dorm, but it has been so long that they demo'd my old dorm.
If you don't mind walking and traffic is really bad, you could park at Ollie's, just down and across the street and then walk up to Alumni. Back when I was in school there, people used to go there when it was a grocery store and steal shopping carts and take them back to campus to help move stuff, so it is not that far away.