In the free plugin you are able to display notices on some specific WooCommerce pages/section.
- Cart Page (Classic)
- Cart Page (Gutenberg)
- Checkout Page (checkout)
- Login/Register
- Account Page
- Account Orders
- Account Downloads
- Account Addresses
- Account Payment Methods
- Account Details
All these pages have hooks that will allow you to display notices in those areas. Here is a visual hook guide for the cart page. https://www.businessbloomer.com/woocommerce-visual-hook-guide-cart-page/
Here is a demonstration of placing a notice on the cart page