I did a 4 hour drive this weekend (one way) and I took some bars, a jar of macadamia nuts, cinnamon trident, some slim jims, some SF candy, beef jerky... in the end I way over planned it, had most of that stuff left when I got home, but I did do the driving there and halfway back, so I was not at liberty to snack the whole ride. LOL... You will be fine.