We're going to the opera!

[rupert the dog]

Not quite sure where to put this one, but here goes. Courtesy of our lovely daughters, we are going to see Madame Butterfly at the Royal Albert Hall later this month. Now we've never been before - is there still any form of dress code for this, or is it like everything else these days, i.e. pick up what you can find on the floor and go looking as though you're off out to wash the car? Any guidance gratefully received.

[rupert the dog]

Thanks for the advice everyone. Smart casual it is then, and looking into eating there. Also thanks for the tip on parking, I didn't think there'd be any street parking around there.