How can I see the checkout attributes in Order detailed page?

Hi all,
I allowed customers to enter message with the checkout attributes in their shopping cart checkout page, but I had a hard time finding where are customers' messages in the admin. Would anyone teach me how to see customers' checkout message info in the order detailed page?
Thank you!

1. add one checkout attribute as text input (you have done already)

2. put text at the time of checkout (you have done already)

3. now check at admin order details bottom of products

Thank you so much! It helps a lot!

what about when its a Multivendor marketplace, we can see the checkout attributes at the order page, at the admin panel, but at the vendor panel checkout attributes of the order are not there.

It's done by design, but you can easily change it by editing the file:
   \Areas\Admin\Views\Order\_OrderDetails.Products.cshtml

Remove
  && !Model.IsLoggedInAsVendor
from

    @if (!string.IsNullOrEmpty(Model.CheckoutAttributeInfo) && !Model.IsLoggedInAsVendor)
    {

thank you very much :):)