We don't use orders because we are a small brick and mortar that sells things to people that come to our store. That is extra documents and extra steps that my employees don't need. Regardless, this is how we run our business. To be clear, you're telling me that Odoo can't run without using sale orders. So, if a customer comes into our store and says, "I'd like to buy this widget." My employees have to create a sales order ( even though nothing is being ordered and it is a useless document that will be ignored ), then create an invoice. That is extra clicks, extra processing time, extra documents to confuse a very simple transaction. It seems insane to me that I can't customize my workflow in this way. Thanks for clearing this up for me.

Michael - do you know that a Quotation is a Sales Order? It is just a "draft" order. Also we have a Point of Sales App for in store sales that works just like when you visit the supermarket - you present your item and the employee scans or enters the product(s) and you pay. Maybe that's what you are looking for?