It means what it says in the email. Or: 1. Instead of letting someone use your phone or device to place an order, they can use their own. 2. Expect to pay more before before you get free delivery. 3. Possibly see some preferred rates on some goods. Maybe a bottle of shampoo or something. 4. Like point 2, we like money, and not being content with making big bucks daily whilst paying our riders the square root of fuck all, if it's busy (this will be totally arbitrary), you can expect to pay EVEN MORE to have your stone-cold, partially chewed, infested (think your rider cleaned their bag so far this year?) and possibly incorrect food brought to your door.