Prices seemed to have finally dropped for my dates! We are there from 6/23-6/30 and I just checked this morning and prices dropped. I used a Visa discount that included 20% off and $30 off, and I was able to get an economy for $133. I'm going to keep checking until we leave to see if I can get it even lower, but hopefully this helps someone!
I sees a compact for $111 or full size for $134 with Budget through Costco.
http://www.costcotravel.com/#11_rentalCars