To those who will be attending Namie's final tour , here's a link that's worth bookmarking so that you will be mentally prepared on what to expect prior to going for any of the Dome concert date(s)
https://faded-lace.livejournal.com/680653.html
This LiveJournal user wrote a rather extensive list on her opinions on the concert venues she has been to & the Domes she has singled out are Tokyo Dome , Nagoya Dome & Kyocera Osaka Dome
It's mainly written from a Johnny's perspective but the main bulk of info (from how to go to a particular Dome , available amenities nearby & etc) applies to non Johnnys artistes as well
Best to buy/bring a pair of binoculars along with you as a Dome is so big