Do you have a photographer yet? Usually all if not most photographers will travel to wherever you want to take your pictures. They are your pictures, therefore you can have them taken wherever you'd like! I am taking my pictures downtown, however I did take my senior pics on the LSU grounds and the photographer can usually find cool places for you to take them, that is their expertise after all!
You don't have to get permission to take pictures on there campus. people take pictures out there all the time. WE are actually taking our engagement pictures out there too! You just have to find a photographer that will shoot on location there. Most don't mind traveling though so that shouldn't be a problem! happy planning =]