i have not been and will most likely wait a bit as i go by there most days and see a line. not a big line.....though i am unsure of how these special exhibits work in the europe still....in my experience waiting a month or so until the crowds clear is usally a better way to go....but that's me....i like to go in the middle because everyone is excited at the beginning and all the people who 'forgot' to go rush to see it before its over.

my two cents.