Good to know about selling out - I'm sure this varies, depending upon the ship. Good info about the Mickey head cruise ship charm too!
You are correct about some Chamilia charms not fitting the Pandora bracelet. I had a woman right in front of me purchase a charm (Pooh, I think?), and quickly return it in the same transaction, as neither she nor the CM could get it to fit right.
I really wish that Disney would have Pandora make the charms, as I prefer Pandora much better. Honestly, I don't like most of the Disney charms, as the design is a bit off. I also prefer Pandora bracelets - I returned the Chamilia bracelt that DH purchased me at MK, as it opened several times (and it only had 1 charm on it, so no weight issue at all). Pandora has a much better locking system, and has a safety chain bead, that protects should it come undone (which mine has never done).
Tiger