Haneda Airport was surprisingly inconvenient and time-consuming. If one is going to switch planes at this airport they should make sure they have plenty of time, because it takes quite a while to get around to different parts of the airport, especially because to go to different concourses and the like you actually have to take a bus. In the end I had plenty of time remaining but it still took me well more than an hour just to get to my gate. The staff were helpful, although the receptionist left me standing for a while before even seeming to notice I was standing right there at the desk. The airplane seats were also pretty uncomfortable and I had little space, especially leg room, after having to stow my bag under the seat, especially because I'm a tall person.