A club is an entertainment venue 
Having recently gone to Ibiza and attending numerous clubs there. I feel that most "normal" clubs aren't that entertaining anymore
It normally operates late into the night
That really is the only option since most people drink at these venues, so we need them separated from the daytime public as there is children around
A club is generally distinguished from regular bars, pubs or taverns
Yes because at times I prefer to go to bars/pubs as it allows me to have better conversations with my group of friends due to it being more quiet
They have VIP section for celebrities and guests
I would quite like to be rich or famous enough to be invited to the VIP section. One day hopefully!