Yeah I thought that might keep you awake, just a thought and something I've been afraid of getting the wrong side of. Of course it could just as easily smash down and I wake up to find I've missed all the fun!
I was in Japan in 2007.. exchange rate = 1 USD to 122 JPY... I went in 2008 = 1 USD = 100 JPY... I am going in a few weeks, now it's at 1 USD = 76 JPY... Sad to see what the USD can't buy 🙁