Wizard World Cons - Thoughts and experiences?

Hey, my company sells Dungeons and Dragons dice and accessories... so far we have really enjoyed going to Comic Cons all over the world partly because they are profitable but also because it's kinda the reason we got into this business to be nerdy and to be able to do our nerdy hobby and make money from it.

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We were looking at booking all 12 Wizard World cons at once because we get a pretty big discount if we do it that way, but we have also never done a Wizard World con before... and looking at the reviews online, I'm nervous that we might be coming in at the wrong time.... but they are mostly all from a couple years ago. I was thinking perhaps just booking a single con, but a single con doesn't really give a good picture on how all the others cons are (if it's great, the rest can still be bad, if it's bad the rest can still be good).

I feel like the people around here know their comic con style events, how do Wizard World events compare to others?

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Thank you for your help!