Just back from 3 day cruise. Wanted to do some private trading with cast members, but it was to no avail. We had pins from the 3 Broadway muscials. The cast members were really excited, but no one jumped on it!
We (DH, DD, and myself) traded mostly with kids and cast members, both in the parks and on the ship. The kids descended on us like a swarm of locusts! We had
Disney Store 100 year pins for trading and ones we got from the parks (mystery pins) and didn't care if we traded again.
They were just so excited to be trading. I made some tough requests, and if the child hesitated, I told them not to trade and never feel pressured into trading if they didn't want to. Most often they didn't end up trading with me. Which was fine.
We came home with a lot of
Disneyland California Adventure pins. We were happy. We don't go crazy for limited edition, we just go for those we like. We did come o=home with a ton of cruise pins, cause you can only get them on the ship!
I guess it depends on the cruise and who is on it. Good luck.