Evening and part-time openings around St. Louis (update)

I am looking for part-time work that fits around school hours and found a few evening shifts near St. Louis. It has been weighing on me all week. Some roles have a small tuition benefit. How many hours do they guarantee?

I worked evenings at a hotel. The hours were steady and the team was friendly, but weekends were busy.

Thanks for writing this out. I went through something close to it last year, and it settled down once I kept a simple log of every call and form.