Applied at Costco for Unknown

I currently hold a full-time job and a nice part-time position, but I've been dreaming of working at Costco for years. I finally landed an interview with them, which is exciting! However, I'm feeling a bit anxious about the potential outcome. If I get an offer from Costco, I worry about risking my current jobs for a seasonal position that might not lead to long-term employment. It's a tough decision, and I'm trying to weigh my options carefully.