Yeah I think we can't say for sure how much of Ai's decision is to tour small venues. But her sales have been declining so much and it's sad to see what a big difference between pre and post hiatus.
Ai will be on NHK's Utacon April 23rd. It's the 2nd night of their Heisei Hit Ballad show. (sooo...Planetarium?
)
AWA has just unveiled listening plans for many artists, there was a TA mail sent last night about Ayu's plan, and it seems they have one for Ai as well. For 270 yen a month you can listen to unlimited Ai songs and also participate in ticket presale through AWA
https://info.awa.fm/artist_plan/bd71bf6c8ca496823e31/