If I get my license the day before, am I able to go to a different city & courthouse to married?

In the US, yes as long as it is within the same state.

*** some courthouses will requre an appointment to schedule, others just do weddings at one time or two times a day, people who want to get married, just sort of wait in line to go in and see the judge.

Still a lot more fun to do it on location, I am planning a few for six flags this year, nothing says I love you as saying I do on a rollar coaster. Or on a plane, or a ballon ride,
Or where you meet, did one inside a walmart ( unofficially ** without walmarts knowledge) once
Did several pool side, one beach side.
And many inhome weddings.

So you can think outside the box on weddings