Sword Art Online: Ordinal scale is a nostalgia trip. A revisit of the art, music and story of SAO. There is no question that this is follow up to the previous stories, with references and plot being determined with expectation of prior knowledge.
Action scenes are memorable in their own right. Fights take advantage of the your pre-existing knowledge, skills look and sound cool, with a familiar soundtrack. The timeline takes place after season 2, but the story follows on from the events of the Sword Art Online Incident in Aincrad.
If you liked the anime, especially the first arc, you will like this movie.
Relationships are a major theme in this movie, mainly focusing on Krito and Asuna and the main group of SAO survivors. It was engaging to see how everyone interacts outside of the game before being thrust into the main adventure.
SAO: Ordinal Scale focuses on and selects on the best aspects of what made the SAO anime popular
I had an enjoyable experience with SAO: Ordinal Scale. The story reminded me much more of the Aincrad arc bring back the essence of the story. I felt invested unlike the ALO arc in the anime and found the exploration of Kirito and Asuna's relationship and future delightful to see.