Breakfast in toll service area?

I plan to hokkaido in july & plan to leave very early morning everyday. So i wanna ask : Have any breakfast at toll service area? Restaurant open? Or Only convenience store?

Thanks in advance.

Restaurants usually open around 9 or 10. Combini and vending machines are available before then. You might get lucky and find a coffee shop like a starbucks that's open earlier, but if memory serves me right, even the PA starbucks aren't open super early.

What part of Hokkaido are you talking about? From where to where are you going every morning? You are driving a car, correct? There's a great difference depending on the location and transportation.

Thanks Uco , I stay at sapporo & plan to furano , asahikawa, noboribetsu & Otaru on each day. Yes, I drive a car.

Is that "toll" means "ExpWay(高速道路)"?
http://northern-road.jp/navi/eng/index.htm
http://www.driveplaza.com/trip/drawari/hokkaido_expass/en.html
If so SA restaurant/cafe are closing until AM7:00 or 8:00 depens on location.

But many SA/PA(*) food vending machine exist like this.
http://kuu-kai13.net/wp-content/uploads/2015/08/IMG_2429.jpg
http://blog-imgs-49.fc2.com/d/j/e/djebeltour/iphone_20110805191950.jpg
http://blog-imgs-19-origin.fc2.com/n/a/m/namazr/126485289350.jpg
"N ニチレイ(Nichirei Foods)" is one of famous big "Frozen food" campany.
This is vending machine's food deteils.
http://www.nichireifoods.co.jp/product/frozenfood/#js_tabCont6
No worry about "thaw" but will be "pretty hot(over heating)" mostly be careful.
https://youtu.be/jZkMU_w1TfM
https://youtu.be/w_uXUrLWbsU
Drink vending machine exist 100% working 24hrs.
(also ice-cream/bar one exist mostly except winter)
https://www.glico.com/assets/images/large/0523__1.jpg

Tarumae樽前 SA(up/down route both) btw Shiraoi and Shiraoi is rare case
"Seicomart(famous convenience store in Hokkaido as local brand)" with
(Local people calling "Seicoma" usual as nick/shorty)
open 24hrs no big different other regular convenience stores.
http://www.driveplaza.com/sapa/1050/1050051/1/
http://www.honda.co.jp/dog/highway/douou/tarumae/down/photo/01p.jpg
https://goo.gl/maps/EPEZy41J4YN2
https://youtu.be/i1vqZ7TQAiE?t=16m4s

*)SA/PA?
http://en.driveplaza.com/rest_facilities/

I forgot to ask how early you mean.

But just to add to the other poster who already provided information on SAs, here is a list of cafes in Sapporo that are open from early in the morning. You can see from the numbers that these are mostly open from 6:30 or 7:00.
http://matome.naver.jp/odai/2142882878139272101

People who prefer to eat earlier than that typically bring their own lunch that they prepare the night before, or wait until they reach some place that is open. For example, Otaru is very close to Sapporo, so you might as well have a hearty meal after you reach the city.

Thanks for your all kind & information. Think of my happiness trip in Japan.