No it does not use stamina potions or any food to boost run energy, just use rooftops like everyone else, the exp is a lot better^^
The exp aint great or courses, the only you need is 1-10 at gnome stringhold really
It eats it when you need to boost your level, if it's not required it's not going to eat them
Enjoy
No there is no need for that at any rooftop, there is no rooftop where you get 0%...
Enjoy, ya stealth