The problem is unlike all other quests, the actual quest "brochure" has a Well Card right with unique codes right in it. So people take many of them as they are just out for the taking.
They should be at VMK Central in tomorrowland. When I was there a couple weeks ago, they had some of the cards right with the other quest cards. If they don't have them out, she may have to ask the person working.
I was there yesterday and they have the pirate quest cards right out with the other cards. HOWEVER, people were taking several at a time and the cast member did put them away because he said that was all they had left for the rest of the week until another shipment came in. Now I am unsure if this is true, but later in the day when we walked past, someone asked for one and a different cast member said they were temporarily out.
Oh and on a side note,...she's my older sister - but she sounded like a giddy teenager on the phone, so cute! She was telling me all the cards she got, teleportation magic, rocket ship couches, etc.
You can get them at the VMK booth outside Innoventions. Every time I've walked by, they have not been out. However, you can walk up and ask for one, and they will give you one for each member of your party.