Who is authorized to order photo products from my Joomeo store?
The Joomeo store option does affect the sharing authorizations you have given to your contacts.
Your contacts' authorizations for each shared album will remain exactly the same after activating your store as they were before.
Only those contacts authorized to order photo products will be able to do so, whether you activate your Joomeo store or not.
Contacts to whom you have not given this authorization will not be able to access the "Order prints of photos in the album" option.