Reserved seating from Tokyo to Shin-Aomori

Hi there,

I am researching about the JR Pass and it is mentioned that I can take the Hayabusa Shinkansen from Tokyo to Shin-Aomori. However, I also read that this requires a reservation and that if I want to take this option, I would need to collect my ticket a day before I make this trip.

I would not be able to do that as I would be in Kyoto before that.

I would like to ask:
1. If I am taking the Hayabusa Shinkansen from Tokyo to Shin-Aomori, would I need to reserve my seat
2. If reserve seating is necessary, does that mean I will not be able to take the Hayabusa Shinkansen from Tokyo to Shin-Aomori and will instead need to take the Komachi Shinkansen?

Thank you
Dion