Can a rental car drive on base?

Head to the visitors center first thing. It's visible from the entrance.

Take the hotel shuttles if you are going yo the Graduations. Painless!!!

Just have the rental agreement and military ID with you at the gate. And make sure the names match on both of them. I did just that a couple weeks ago.

With military ID

I am veteran can I join on graduation day

No. But if yiu have an escort with a military ID you can.