One of the most chaotic aspects of Hatsune Miku: Magical Mirai is definitely finding where you have to go to get certain goods at the exhibitions. One fan named R.J on Twitter made visual maps showing which official goods will be available at which booths for both the Osaka and Tokyo locations! Larger versions of the maps are also linked for download.
Kudos to R.J for putting this together! Magical Mirai 2018 Official Site → https://magicalmirai.com/2018/
Osaka Intex Map
Makuhari Messe Map