We had a GV in the Congress Park area in late 2007, overlooking DTD. We've always liked the CP location, and that was our request. We drove our rental car the whole time, but had other family staying in another unit in CP, and they used the bus on occasion. Didn't have any problems.
Just my opinion, but I don't know if I would burn the points to stay in a GV there again, unless you really need the larger common areas for big group gatherings. We were treating family to a trip, and my DH and I were positively shocked/disappointed in the storage/closet set-up in the master BR in the GV. There was hardly any drawer space (pretty much had to live out of our suitcases), and the closet was small with a bi-fold door that would get caught on the provided hangers when you closed it. Both sets of our parents in the upstairs bedrooms had better closet/storage space than we did, which was bizarre.