Looks like the seating capacity is 13,500 when configured as shown in your picture, Nikos.
That’s yuuuuge for WV!
http://www.charlestonwvciviccenter.com/p/about
Thanks for that info - I always like to know the capacity. I could be wrong, but I’m thinking they won’t have chairs on the floor to get more people in (seems like that’s what they normally do).