If I scrunch my hair tonight will it still look pretty tommrow?

I have summer school tommorow at 7:45 and I don't fell like getting up at to do anything to my hair. so if I put moose and gel in my hair tonight will it look good tommorw? I will be putting it in a ponytail becuase i have to run for cross country. I have dark brown hair that goes to the bottom of most bras in the back. should I put hairspray in it tonight or tommorow