I wonder if they'll be able to try the online at the demo stations.
Well we know the game will run fine in Japan, their internet is way better than EU and NA will have in the next 5 years.
Now, Atlus had the chance to test the online with Otakon and EVO, since they had the game at different locations and they could had tested it there. And we could know how much it could handle, because the environment of both places was the worst, since the internet usage was been over-saturated, specially at EVO.
But also we don't know if the build Atlus and RSG had/have has online mode playable.