To dream of a theater, denotes that you will have much pleasure and satisfaction from new friends. You may lose money through some silly pleasure. If you were the performer, it is from a emotional perspective.

To dream of being in an opera theater, foretells you will successfully realize your wishes and aspirations.

To dream that you are laughing or applauding in a theater, foretells that you will sacrifice duty to the pleasure and instant gratification.

To dream that the theater is on fire, signifies that you will engage in some risky undertaking.

See also Stage