In an amphitheatre every seat faces the centre, so it is read as being watched and judged. Standing in the middle stands for exposure; sitting in the rows, for watching life rather than taking part.
When this appeared in your dream, what were you feeling?
My Cosmic Code has a private dream journal. Write a dream down and the app picks out the symbols in it, shows what dream books say about them and, over time, which words recur across your entries. The journal is stored on your device only.