I watched it a little bit ago. It's awesome for pure fan service, but they really break canon all over the place. Biggest case is that no one is supposed to remember who Majin Buu is, yet the name of the Hotel is based around Satan's act of saving the Earth from him. In the ending of DBZ, people remember that Satan saved the Earth, but they don't remember what he saved it from. Toriyama is rolling in his grave.