We see shows every time we go to London and soon hope to see the 25th anniversary of Les Miserables in October, which also goes nicely with our recent summer extended travel to France and Paris which included homeschooling about the French Revolution and Victor Hugo.
Go early and bring a picnic like the locals do and sit on the cheap high seats. We did not even book ahead and we were there in the height of high season. Even kids who might not like an opera at home will love the people-watching and almost ballgame-like atmosphere before the show begins and at intermission where they sell ice cream and such with vendors working the crowds. They also have a tradition before each opera starts where candles are passed and the whole coliseum lights up with candles which kids love and it is an awesome sight to behold. We saw two operas, while there, Carmen and Aida, and all of us wish we could have seen more. Both were outstanding and Carmen was directed by Placido Domingo ( I happened to go to his 50th birthday party long ago through a friend, so have met him) and it was designed by one of our favorites, Franco Zeffirelli.Go!