I saw it in IMAX and I thought it was an amazing visual spectacle. It's coming back to IMAX on Dec 3, so I'd highly recommend seeing it then if you haven't seen it yet or haven't seen it in IMAX.
In terms of the movie, I was thrown off by the ending, which seemed kind of abrupt. I had this weird feeling where I felt like the movie was too long (because it's legitimately a long movie) and that it was too short because it ends so abruptly (because this is just Part I, after all). I also felt like Chalamet didn't have the gravitas to carry a movie, especially an action movie. He's a great actor, but I feel like he can only be a great actor in a smaller, more drama-focused movie.
Also, I was kind of disappointed because it wasn't as good as some of Villeneuve's other movies. Blade Runner 2049, Sicario, Prisoners, and Arrival are all amazing movies.