Hi Swamp Fox,
I was at Blizzard Beach this summer, and the CM's were wearing lanyards in the gift shop, but I did not see any pin traders there. I (being adicted) looked at every CM lanyard I could find there but I couldn't find anything spectacular. Plus I didn't bring my pins to the park, being that I would be in water most of the day. I hope this helps, maybe things have changed since then.
-Matt