I'm sure you've looked at what to do in page, which is horseshoe or big bend or whatever they call it. There's not much else in page that'll consume more than an hour if you like dams.
If you're going to the grand canyon take the 64 at Cameron and stop at the little grand canyon. It's a quick stop at a spectacular gorge.
Food and stops are few and far in the area you're headed, be full of fuel and prepared to drive twice as far as you'd expect.
If you're headed east from page, canyon de chelle is the best thing in this whole state. The four corners Monument is the schmaltziest, most shameful spectacle of concrete and poverty I've ever encountered.
If you're headed sout to the 40,
Flagstaff is closed up except food take out. Black barts is an odd, clean rv park with an absolutely great(ish) steakhouse with singing waitstaff, but probably no food served now.
Keep us informed from there.
I don't know where you're headed but I suggest
Payson, greer, lunch or dinner at LA posada, a restored Harvey house in winslow(Winslow is otherwise depressing enough to make you cry).