I had the opportunity to live, work and train in Japan for three years. It was the best experience of my life.
I had the great fortune to train under Murase-sensei, who trained directly under Yoshinobu Takeda Shihan. http://www.aikidosydneycity.com/takedashihan.html
I trained 3-4 times per week with Murase-sensei and usually twice a month we travelled to Takeda Shihan's dojo.
I highly recommend going. Take any opportunity there is to train. Cramb as much training and living into whatever time you have there. The memories will stay with you forever!