Its part of the 10 days of prime cherry blossom viewing expected in 2023 so I think Tokyo will be extremely popular for vacationers. We got lucky before and there is nothing like it, we also live in a S. California part of the U.S. that doesn't see cherry blossoms so its a sensory mindblower for us :0) Expecting Tokyo area to be packed and lots of Disney fans so we will try for that earliest bus. I did find out you cannot buy the bus tickets in advance but hoping to go to the station the day before to see just when you can purchase. Looked like you couldn't buy return tickets ahead of time either but if I find out otherwise I will return here and post. Just so appreciative of the info!