Can I bring a book bag or small bag to carry my stuff?

In my experience, it depends on the rules of the concert's promoters. I usually take a small purse where I can carry my cell ID n credit card. Most of the food court places don't take cash anymore

Yes if it’s large bag it has to be see through tho. If it’s small like a fanny pack then it doesn’t have to be see-through

Yes

Very small bag unless it's clear, for id, phone, credit card(s).... It's a cash free venue as well.

There is a size limit. If it's clear plastic, it's better.

Yes they just look thru ya book bag briefly. Their was no issues