Yes, she is a diva! As for spending... she has the money right? It doesn`t bother me
I know I would spend it if I had that much, but I also think it`s a little overboard to book 4 plane tickets...
Btw, I heard that in U.S. stars don`t get payed, they have a budget of few milions and they spend it however they wan`t. I don`t know if Ayu has that .... :/