I really enjoyed this movie. It has a very detailed and interesting story, in a setting that you don't often see in kids movies, or really any movie. It has a strong sense of adventure, so I highly recommend this film for fans of adventure stories. Animation and voice acting is excellent (I watched it with Japanese audio and English subs). Doraemon himself is a very interesting character which really appeals to the inner-kid in all of us. Highly recommended checking out this movie if you have the chance (riding a Japanese airline might be your best bet if you aren't living in Japan, that's how I saw it).
Review by furple from the Internet Movie Database.