Those are separate things. The VIP/Premium tickets are a way to do dynamic pricing without looking like you're proving too many price levels. The extra fees are a way to show lower prices and let the fallout for the end price fall on another group. I outlined a lot of this with real data in another comment here. Just search for "mccartney" in the comments here.
They are - but, where, say, 5-10 years ago VIP might only be the front couple of rows, for some tours now it might entire sections, especially on the floor.
