I lived in Japan for 2 years in the 90's and heck to the yes on onigiri. I'm still craving them. And yes, the food there is generally really good, with enough meat cutlet, rice/noodles to keep anyone happy.
I'm quasi vegetarian, a foodie, and will eat most anything. I don't love big hunks of meat (steak, chicken breast, pork loin, etc) as it just not my thing and have noticed that on many group tours the food planned to the lowest common denominator, i.e. hunk of meat and starch, as that's what usually appeals to the largest number of people. I find myself scrounging for garnishes some meals just to get some green veggies in me.
(FWIW I'm not totally against meat and I've seen too many vegetarian meals served that were a pile of potatoes, rice, and peas to want to ask for vegetarian across the board.)
My in-laws came to Japan while we lived there, and frequently snuck out to Burger King because the food was "too weird."
I've not done an ABD, but maybe there was enough feedback from those who weren't adventurous eaters?