The TV Tropes page on the film ( http://tvtropes.org/---/ReadyPlayerOne2018 ) mentions some of the adaptations that had to made due to legal compications; I just hope this doesn't apply to some of my favorite shout-outs!
I watched the teaser...and forced myself to not watch the trailer so I could kind of be surprised. And yes...I'm SURE there were legal complications. BTW, I was pretty proud of myself...in the book, I guessed part of one clue...I figured he was referring to Cap'n Crunch! I seem to remember that they spelled it wrong (Captain). I could be wrong, but I can't find it in the book now. Just a useless fact I felt the need to share LOL
Think it'll be a great movie but a lot different from the book. Have a hunch that the film won't have time and energy to build up the feeling of the Oasis-society in the same scale as the book does. Fingers crossed that it will be a good movie!