Seasonal hiring: what is paying well this year? - what worked for you?

I am looking at seasonal jobs around Salt Lake City that might lead to something longer. I worked as an HR coordinator before this. 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 made the follow-up calls so much easier.

Apply to several. Start dates and schedules change quickly and having options helps.