Seasonal hiring: what is paying well this year? after 13 years as a call-centre agent

I am looking at seasonal jobs around Minneapolis that might lead to something longer. It has been weighing on me all week. Hours ramp up in the coming weeks. Is it worth applying to several at once?

Keep everything in writing and save the confirmation numbers. It saved me later.

Keep a list of supervisors' names. A reference from one of them helped me land my next job.