I got offered the retail position. I clarified with the manager that I was still looking for work in my field, and asked her if I got a job in it, if she would be okay with my working only evening and/or weekend shifts, and she said it was absolutely fine. I get the feeling she's really working on staffing and will have a full staff before long.
I went for a second interview for the position in my field and I think they still like me. I hope! I should know more later this week, but I have a feeling they're at "fish or cut bait" time.