Someone on another thread posted this excellent site:
http://www.wdwgolf.com/
There's a lot of helpful information, and I think answers to questions I've seen here, including a lot of info about rates and discounts.
Also some details about the relative difficulties of each course, as well as brief commentaries on each.
Lots of good infor in the FAQs. One FAQ page has some details about the rental clubs and indicates that my concern about the value of renting clubs with the 2-round discount is unfounded if your rounds are played in one day - the rental rate is good for a day of golf.