We just got back from a visit to Tokyo DisneySea and we went at one of the busiest times of the year. I think DisneySea is the greatest of all Disney Parks that I have been to. I have been to 10 of the 11 parks. First I did a lot of on line research and knew the parks we going to be overcrowded, but it was the only time in the next few years that I would have a chance to visit. So I planned ahead and knew what I was going to do. Walk fast to the first E ticket ride I wanted to go on and pull a fast pass. Get to the second ride quickly and ride it (5 minute wait) or to the third ride and get on (10 minute wait). Go ride the fast pass ride and pull another fast pass. Doing this all day I avoided any standby line that was more than 30 minutes and rode every ride I wanted to.
I can not understand how anyone today, with access to the Internet and all the information on Disney Parks, could go to Disney Resort Tokyo and not know it is famous for its 120 minute and longer wait times.