Our salon is Cash/Venmo/Quickpay gratuity preferred. Enabling Gratuity on iPad checkout would allow our clients to take the easy route put Gratuity on CC and it is not really convenient for most stylists. However, for new clients, tourists or clients that forgot sometimes gratuity on CC is our only option. In our previous system we had the option to "Print with Gratuity" or "Print without Gratuity" receipt. We think it's a good option that would allow most salons flexibility with their stylists/clients.