Society as a whole is now more upwardly mobile than ever before. Over 97% of Americans have a cell phone and over 80% of them are Smartphones... what does that mean? It means people need power everywhere they go and when they do not have power, it effects their decisions on where to eat how long to stay, what they buy and how much they enjoy their stay.
You can place them on every table because these do not have to be attached to an outlet. No Wiring = Saved money and flexibility to put them everywhere your customers are!