Can a customer exist without having an account? 🤔

### Explanation In Shopify, there's an important distinction between a customer and a customer account: ```liquid {% if customer %} {% if customer.has_account %} Welcome back to your account, {{ customer.first_name }}! {% else %} Completing checkout as guest {% endif %} {% endif %} ``` Key points: - A customer can exist without having an account (guest checkout) - `customer` object exists during checkout even for guests - `customer.has_account` specifically checks if the email is tied to an account - Common scenarios: - Guest checkout: `customer` exists, but `customer.has_account` is false - Account holder: both `customer` exists and `customer.has_account` is true - Not logged in: `customer` is null/false - This distinction allows for guest checkout while still tracking order information Reference: [Shopify Customer Object](https://shopify.dev/docs/api/liquid/objects/customer)