If I'm hunting on my own...which is always, I take care of my kill right away. Field dress or bone it out...
Since you are hunting with an outfitter, ask him. Most have certain ideas about how they want to go about dealing with their game taken in the field....they may have reservations about gut piles, or carcases left in an area where clients are hunting, and you may spoil an area where you can return to hunt yourself later that day, or the next. Ask the outfitter, he'll spell out his wishes!