Difference Between "Ready Scene" Set and "Preload" Set?

tristanthorne1997

In the Gamer Room set, 

https://www.daz3d.com/fg-gamer-room-and-props

What's the difference between Ready Scene Set and Preload Set?

Similarly, in the Jacuzzi set, what's the difference between "Jacuzzi Deck !Preload Iray" Set and just the "Jacuzzi Deck Iray" Set?

https://www.daz3d.com/jacuzzi-deck

Please see attached screen shots.

NorthOf45

For the Jacuzzi, the "Jacuzzi Deck Iray" is the deck, the walls and the tub. A preload usually contains all of the props in a product, in this case, it adds a couple of chairs. A Ready set, or Ready-to-Render, has a preload and lighting/render settings and probably cameras, so you just load and you're, wait for it, ready to render.

tristanthorne1997

Thank you, North. 

ArathSin

What is the use case for the preload?  Is it faster for maybe working with character poses/etc, then you delete the preload content and load the ready-to-render?