Our cafés like ordering by Viber. They will not use a portal.
Some will not, and they do not have to — an order that arrives by Viber can still land in the same list as the rest. The gain is not that every customer changes habit; it is that one summed production sheet comes out at the cut-off instead of a person retyping eleven messages at ten at night. Even half your customers moving over removes most of that hour.
Selling off the leftovers cheapens what we make.
It can, if it is done in the window where people would have paid full price. Done in the last twenty minutes, to people who asked to be told, it is the difference between bread that recovers some of its cost and bread you pay twice for — once to bake, once to dispose of. And the reporting matters more than the selling: forty loaves left every Tuesday is a production question, not a discount question.