Great movie, love the all the fan service aspects like DK Racing, Mario Kart, and all the aspects of the new Super Mario World games from the Switch. However, it went by way too fast. They could've done a better job during the "adventure stage" with Mario and Peach's adventure to the final battle between them and Bowser. I think this movie needed like another 15 minutes or so to properly build up to that final scene. I thought the voice actors would be major cringe, but they all came away as solid even Peach and DK (and I dislike Seth Rogen). E: Agree with others, the Bowser singing scenes were so bad and so unnecessary.
We really need this to happen where the Super Smash Bros. would be like "The Avengers."