Originally Posted by
Tokyoite
Not that rare, and the FAs wont even bat an eye as long as it is USB-powered or powered by small size batteries (no large batteries to deal with), QUIET (not a strangely noisy fan that would disturb the cabin).
YouTube search it and you will see examples of people with USB fans on the JAL international flights.
I personally have a small hand-held AA battery powered fan, a popular item to have to cope with the hot Japanese summers, and I use it on JAL/ANA flights when needed.
Wonderful! Thank you for the reply

I'll do some research and grab a couple before our trip. I'm used to layering up on planes, so this will certainly be different!
Originally Posted by
rustykettel
Try to get window seats on the right side westbound and left side eastbound to avoid solar heating as much as possible. There's a thread about cabin temperatures and mitigation strategies
JAL - Hot Cabin
Gotta admit, I wouldn't have thought of that! We're on the left side going both ways, but I'll see if I can move our seats. Excellent idea and thank you for the thread link!