Without a doubt this is incredibly important. Retreats are a major part of our business and I'm paranoid about emails going out that show the rate information the group leader is paying - and then reselling.

If a rate got to a guest, we would lose our client!

Imo this could also be an option "hide for customer" on the configuration of the Stay product item and/or when posting the product through the Items screen
This way it will not be displayed on the reservation confirmation (when the present is added later and in case a confirmation email is resend for whatever reason).
As the charge for the Stay product can be routed already to another bill (of the person paying for the product), it will not be visible on the guest's bill.

If a third person wants to purchase a gift such as champagne, flowers etc, currently the product is visible to the staying guest on the confirmation and dashboard.
Products have to be set up as stay products so they can be in the product report forecast, so there is no other option.
The only way to work around this at the moment is to add an additional product for every product with the external name * (asterix), so it does not show in the products of the confirmation etc