This is a nice place to walk around. I used to eat lunch here all the time when I worked on campus. There are plenty of paths and shade. The first schoolhouse in Melbourne was moved to the premises - make sure to wander around until you see it. Also a good idea to walk around the rest of campus while you are there - the large palm-type tree behind the president''s office is apparently quite rare, and once Walt Disney himself asked to buy it, or so the student tour guides tell potential students. I see a couple people mention parking issues - there are more visitor spots by the president''s office that usually aren''t full and it is a pretty close walk.
The botanical garden is not big, but the scenery is good and it is free. In spring and summer, flowers and plants are luxuriant, and branches are full of wild fruits in autumn. If you are lucky, you can also see the lively and lovely red squirrel and the blooming giant flower konjac.
Beautiful experience! And it's free.