Yes, accent colors can be modified.

Yes, Shopify supports test orders.

Yes, shipping zones and rates must be configured properly.

The product may not be marked as a physical product.

Yes, if shipping settings are correctly configured.

Yes, store policies can appear in checkout.

Yes, Shopify Checkout is PCI compliant and secure.

Yes, Shopify Checkout is PCI compliant and secure.

Checkout.liquid is deprecated and limited mainly to Shopify Plus legacy stores.

Yes, heading and body fonts can be selected.