Disney rents two manufacturers clubs, King Corba and Titliest. KC are $45 and Titliest at $55. You might get $5 off, if you don't want graphite shafted irons. You can also rent shoes for $7.
All of the Disney courses are "resort style", which means that can be played by all level of golfers by using the right set of tees. Oak Trail is a "walking only" 9 hole course. All others are played with a cart and at 18 holes.
Eagle Pines, as mentioned above, is the easiest of the 18 courses in my opinion. Ospery Ridge is the most difficult, although the pros play Magnolia and Palm due to their length.
I don't think you will go wrong on any of them.