Recently I stayed at the Disney Pop Century resort. I went downstairs and was amazed they have RFIDed the crap out of the new souvenir mugs.
See the Full article from the Disney Food Blog
http://www.disneyfoodblog.com/2013/08/15/news-and-review-rapid-fill-refillable-mugs-for-walt-disney-world-resorts-now-in-use/