I have set up a thread that I hope the moderator will let through.
I used to work for Ideal World as a floor manager, and want to answer all questions like this in the thread.
As a floor manager I would look after guests/presenters, manage the shows, products, look after health and safety in the studio and be in contact with directors and producers throughout the show.
The Answer to your question:
Janice gets sent the product in advance to get to grips with it and learn its specific functionality. When she is happily prepared, either she charges it up in the green room, in case it goes to air, or gives it to a floor manager to charge up backstage in case it has to go to air.
All of the pictures and media which Janice demonstrates are kept on a personal SD card of hers. She transfers this SD card between all the tablets she demos on air. This is how the pictures and other media are there quickly, because she has the card with her at all times. When at Ideal World, Janice will be prepping at least 3 products for shows coming up that day or in the near future. She works extremely hard and is one of the most professional guests I have ever met.
