The only resort pin trading night is at the Contemporary about once a month. Nicely done and not in the cramped/dark lobby anymore, it's held down in one of the big rooms at the Convention Center. We attended the first one, there were so many people that they had to open up another room.
The WOD Pin Book is still brought out at least daily, not sure of times though.
They have a Pin Jeopardy type of thing in on eof Epcot's Innoventions walkways, the Mission Space/Test Track side, I think it takes place at 4pm daily?, done out of that big Mickey gift store there.
Pin Central has a trading board that they brought out while we were there.
Sorry, not much help with times, hopefully someone else can help you out there.
Try to catch "Scoop Sanderson, Pin Trader" on Main Street. He is not doing his Pin Talks anymore, but is now a walk-around character. Steve Soares' website might have his schedule, or you can always check at Guest Services on the left in MK as you enter.
agnes!