Found roasted corn last year at a little stand near the haunted mansion. It looked like a little a little roadside fruit stand. I stopped to grab a bottle of water and noticed on the sign they had corn.
Sorry, was not all you can eat, but it was great!!!
They have it at HDDR. They bring out a big bowl of "nibblers" (not the whole ear) for the table. Nobody else wanted any as they were stuffing themselves with meat (and I'm not a big meat person) so I stuffed myself on corn on the cob and bread.
**Also, the Cape May Clambake at the Beach Club is an all you can eat buffet with steamed corn on the cob on it.
They serve it at WCC and HDDR. Both were the pre-frozen mushy, sticky, over boiled stuff. Not really what I would consider fresh corn on the cob. I would stick with the stands.