Kids from Hong Kong
Wearing uniforms looking like a band, although we never got it straight what kind of group they were, just that they had come to "share their Olympic experience." They ran up to us and asked if they could take pictures of us posing with them in various combinations, and they let us do the same. I think they were on a scavenger hunt, and were required to produce a picture of their group with one non-Asian of any kind.