I don't think it will affect it much. Just don't go during peak season like when kids are on breaks because the madness and crowds are too much, the airports are crazy (Haneda is a little more organized than Narita which is almost 2 hours away (depending on traffic) from Tokyo and the cab rate is costly), and if you're flying ANA/UNITED, just know that they always delay or cancel (I experienced it-nightmare) for some reason especially during Summer time.
I don't think it will affect it much. Just don't go during peak season like when kids are on breaks because the madness and crowds are too much, the airports are crazy (Haneda is a little more organized than Narita which is almost 2 hours away (depending on traffic) from Tokyo and the cab rate is costly), and if you're flying ANA/UNITED, just know that they always delay or cancel (I experienced it-nightmare) for some reason especially during Summer time.