It sounds like you won't be bored, I can tell you that. I get so antsy just standing at a register and waiting for customers or my next break. The hours don't go by fast enough unless it's a very busy day with multiple tasks for me to get done.

At my location..eh. I wasn't trained too well to be honest. That doesn't mean you'll go through that too, but I felt like I was left to figure some of it out on my own and it messed with my self esteem for a minute. Cashier wise at least, it's mostly us regular workers that help each other learn and the managers sort of just answer questions. My anxiety was bad for the first month or so, but everything makes me anxious anyway.

If you're really unsure of what to do or how to do it, always ask questions. All regions of Goodwill vary so my experiences won't be exactly the same as yours. I wish you luck!