Slightly old news but I did hear Jim Parker, Senior Manager, Antenna Solutions group at AT&T talking about metrocells and their deployments in the Disney parks.
The original press release from July mentioned the following:
Hill said the idea of creating smaller cell sites that reuse existing licensed spectrum is a big trend among all wireless carriers right now. And he said, AT&T is deploying this small cell technology in several cities as well as other areas where large numbers of people gather, such as stadiums and arenas.
One of the other interesting thing (if I understood correctly) that Jim mentioned is that they are deploying Neutral host DAS solution that is open to all operators, whoever is interested in. They are also going to provide three separate charging points that will allow anyone to charge their phones (free of charge, I guess). It is nevertheless an interesting project that should prove HetNet concept.