I fit into the kind of "chill" feeling you described. I was glad I made it through the trip (14 hours on the plane) but I didn't have any kind of "awakening" while hanging out at Narita Airport. Truthfully, I was more excited on the plane ride with the cute stewardesses and good food of ANA than when I actually touched down
But I probably would have felt different if I was just visiting and not moving to Japan.