Thanks Rudi
Wow - I would think the price of the ballet wouldn't be more than 10 or 20 US - I wouldn't have known that a "tip" of that amount would be expected (I think even the booking fees in London aren't that high)!
Unfortunately I don't have a fax but am trying to get the email address - or maybe I will just take my chances.

I didn't realize the casino was in the old church - doesn't seem right does it?