Eviction process with 3-day vacate on a Friday

[Amanda Thompson]

We have tenants who haven't paid rent this month. They were friends (I know, bad choice) so my husband was lenient for about a week. However, we have served them with a 3 Day Pay or Vacate notice. The 3rd day is a Friday (tomorrow) so I'm assuming we have to wait until Monday to start? Also, what are the steps? Go down to the courthouse? I've never done it before. And do I need to give a reason? Besides not paying rent, the guy has been texting mean things to my husband all day. Can I cite harrassment?