Bus type to Lake Towada?

Is it one of the larger limo type buses or an ordinary city bus? No meal or bathroom for almost 3 hours?

They are larger limo type buses, but they don't have a toilet. But a 5-10 minute toilet break is made along the way.

A photo:
https://ameblo.jp/kuishinbou33/image-12698784948-15003056878.html