you can't find it in the game. you have to get it from mystery gift. The event date is still unknow.
yes there is
you have to get a members pass with an action replay
In Pokemon Platinum you must go to a Nintendo event to get the item: Members Pass the item will let you go to New Moon Island where you can fight Darkrai he is lvl. 50. And guess what there is a glitch in the Japanease Version where players don't need the members pass, but Nintendo fixed it for the American Version.
In order for one to find out how to use the world pass in Pokemon Light Platinum, one might look to their user manual. Another way to find the answer to this question would be to ask a gamer at the game shops.
You need to get the members pass over wi fi mystery gift but its to late but you can trade it with somebody else
in mystery gift duhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh!
Yes, you can trade them from diamond and pearl
you beat them
You get pass the gruts by defeating them in a battle I think cuz i have not played platinum forever.Sorry if i was wrong dude/dudet.
My brother helped me when I needed to get though and he got it from the Ultimate Pokemon Platinum guide book.You can get it at GameStop for 20-30 dollars.
The Membership Pass can only be obtained using an Action Replay. The event for this item has ended for Pokemon Diamond, Pearl, and Platinum.
You need a members pass/card to get into the hotel in the same town, then you'll be at the island after a bit of dialogue (You can only get a members pass/card from Pokemon events or AR).