The man in the green suit comes only when you activate a Pokemon mystery event (for example if you own Pokemon battle revolution for the wii you can buy things and send them via mystery event to your ds. The green man will then give you whatever you bought.)
use the dousing app. around the lobby
use your invisible item ditecter on your poketech behind the suit area main building(where you are able to heal your pokemon) and then give it to the lady
it is just outside the main lobby for the hotels on the north side of it. it's invisible so you will need to use your item finder.
you get the white flute by findering the suite key at the valor lakefront
After you get an event on wi-fi or special event he will be in a pokemart
you can't.
use the dowsing machine near the suite
use the dousing app. around the lobby
Truly I dont think you can get it in Diamond or Pearl version sorry.
you'll have to wait for an event in Pokemon diamond/pearl/platinum (to get an event you will probaply have to live in japan) when there is an event you can enter ANY POKEMART and there will be a guy in a green suite. if i was you i shouldn't wait for an event because they will not appear. just cheat an event with an action replay or somehting.
You give it to the girl who is locked out of her cabin. She will give you lava cookies
The Suite Key is northwest in front of the entrance to the beach of Route 213. You will need to use the Dowsing Machine Poketch App to find it.
Use your dowsing machine around Lake valor and you should find it neartwo homes
they dont they appear in ur suite they appear in your beauty palor:) i hope this helps:)
As far as I know, you can get a Lava Cookie from the lady who is looking for her Suite Key, near the east of Pastoria City.
Not that i know of ,but she did appear on their latest show suite life on deck.
go to the hotel place stop right before enter the lobby and go to the stairs and walk around pressing a then it should say "you found a suite key" then go the woman and she will give u cookie