No,I haven't been but I would love to go one of these days. I love the scene in Pretty Woman when Richard Gere and Julia Roberts are at the opera and how it moves her to tears even though she dosen't understand the language.
Years ago I volunteered as an usher at the KY Center for the Arts in Louisville. One time I signed up to usher for an opera. I don't remember which one it was, but it was a humorous one that I did enjoy.