I was there. I had a copy. But did nobody read the blurb on the back of it? "The common theme of this dungeon is that no joke is so old, no pun so bad, and no schtick is so obvious it can't be used to confuse and trip up PCs!" Doesn't sound like the classic dungeon to me - not even an homage to it unless Gygax's campaign was really for Toon.
1. "Um, people not reading something," says Snarf. "I AM SHOCKED!"
2. In my case, no. It was literally, "Wait, wut? Why is this at Waldenbooks? CASTLE GREYHAWK?"
So I will repeat- I cannot speak for everyone, but I know my own personal experience. WG7 is in a special circle of hell, joined by bards and soulless, dead-eyed elves.