About the dancer part, it's like they're outside on the street= part of the crowd, normal people. Then they go into the building-whatever and they put on their shows. Also, one thing on the male dance part in the beginning, notice how nonchanantly a guy dancer passes by another guy dancer. Aren't they also the ones dancing together later? Out on the street, they can't show affection to each other, but while inside, it's all just part of the show, no one thinks twice about who's with who.
At least, that's what I think. And I actually thought of the freedom and fame thing before I came across any analyze of GREEN, though not quite as detailed. I'm so proud of myself