Banksy nominated for Oscar, but will he show?

With just three days until the Oscars, Hollywood is buzzing with preparations, including road closures and fittings. Meanwhile, Banksy, the renowned British street artist, has been leaving his mark across the city. His documentary, 'Exit Through the Gift Shop,' has surprisingly been nominated for an Oscar, adding to the excitement.

What preparations are being made for the important day in Hollywood?

How does the text describe the excitement surrounding the Oscar event?