You guys already know about this? Found it with a couple of buddies.
You need the [Pumpkey] and [Pumpkin Glasses] (soulbound) to get in, which you can get through bags or doors. The droprate is awful, though, used like 200+ bags to get the first one, then farmed a motherload of doors for the glasses
It’s to the south in Queensdale a bit to the east of the swamp. You’ll find the door when you use the glasses (gives a 1 hour buff) and can open it with the key. Both are used in the process, though, so if you wanna save them for the keeps, then don’t go there!
The place (consisting of pumpkin heads on tables, stairs and whatnot, and a small mill in the back, really secluded, only the door leading back to the entrance door) has loads of halloween bags on the ground and a guy with a Jack-o-Lantern for a head, called the Pumpkin King. This guy gives you a few of those bags depending on what you give him. Tried with 3 plastic fangs and some candy after that, got 2 and 4 trick-or-treat bags in return. Nothing much else, I’m afraid..
So, keep your eyes open for those pumpkeys or glasses.
Happy early Halloween!
Trick or treat!