This Business: Cart setting (default Yes) also appears on the Uber Direct integration card. When enabled, it (1) checks that at least one of your delivery routes runs on the customer's chosen delivery day for every delivery checkout, showing Sorry, we do not deliver on this day. if none do, and (2) lets the cart fall back to your zip-code routes and pricing when an Uber Direct quote fails, so the customer can still check out with a standard delivery fee instead of being blocked. Set it to No if you want a failed Uber Direct quote to block checkout instead of falling back. Only a Super Admin can change it, in Client Config's Business: Cart tab.