Incident even in La La Land

An unfortunate event happened at last night’s Oscar ceremony. The movie La La Land was mistaken for the Best Picture award and later corrected on stage.
What would I do if I were the director of La La Land?
(not necessarily in the order listed below)
1) Find out how the mistake happened and make sure if it does not happen again to other people or me again.
2) Whole-heartedly thank and appreciate the people that made La La Land a huge box office success (being nominated is a great honor in itself as well)
3) Sincerely congratulate the winner Moonlight
4) Accept the result and aim to make even better movies
5) Enjoy the Oscar after party (I heard that it is always fun, not that I was ever invited :>)