don't forget your sunscreen! I don't know what LSU greek row is like... but if you are walking long distances between houses in the hot sun, you are asking for a killer sun burn, esp if you are going in summer clothes.
on the eyelid thing: clinique had a lil mini foundation made for the eyes called "touch base" and supposedly absorbs oil on the eyelid. i used to use it religiously but found that i couldn't afford it anymore.
Target has really REALLY cute sundresses. I own a few. They are light guazy materials.
And keep the makeup natural. Don't experiment with make up you bought specifically for recruitment if you have never used it before. Stick to your basics or the stuff you already own or know how to use.