Yes
Yes u can it only counted for the ariana grande concert not every concert
I and friends brought purses, it is just that they have guards that have to search them and had to go through metal scanner like at courthouses etc. for security puposes.
A small pouch purse is recommended. The time I went, entry was so organized, there were no long lines.
Yes, you can bring your purse.
Some artists may also have stipulations of clear purses etc
Small that is searched. Honestly, less is better. It speeds up check in
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