A lot of the waste areas adjoining fairways and greens are hard packed sand that won't require much raking, if any. Last time I was there they were often used for cart traffic and even that didn't really disturb the surface. And, you didn't really make much of an impression walking on them. I would imagine in these areas there wouldn't be rakes - just brush over any marks with your feet after playing.
There are, of course, more traditional bunkers with softer sand, often laced with shells. I would imagine there will be rakes at these and that players and their caddies will rake up after themselves as they always do. I'd be surprised if anybody got a bad lie in these bunkers.
Playing them all as waste areas will have the benefit of simplifying any rulings on grounding the club and I doubt provides anyone with a competitive advantage. The variability of sand consistency and texture between bunkers and between bunkers and waste areas should provide some small increase in the "hazardness" of the sandy areas.
Now, if somebody hits it way off line and gets into the more natural areas where the gallery has been walking, then there could be some really squirrelly lies.