Originally Posted by
ETHFlyer
You can still use gran class with a jr pass, you just have to pay the $80 upgrade fee. It’s not worth it unless you want to experience it for the hell of it. And taking the train to Sapporo is only recommended if you have tons of time, it is a pretty long journey.
I took the train from Tokyo to Sapporo before, when the shinkansen only went to Shin-aomori. It was an overnight train, had to pay a supplement and then another fare or whatever (got a sleeper, forget how how much it was? 15,000 or something?). Quite an experience.
Also stopped in Hakodate and got amazing fresh seafood (didn't know about uni-don, but for 1,500 why not? Guy breaks two large fresh uni on top of rice and hands it to me).