Exchange 2013 Retention Policy differences between Std and Ent. User CALs

I have been reading about the differences between Standard and Enterprise User CALs for Exchange 2013 and I understand most of it.  However, I am having a hard time understanding what I can and cannot do regarding retention policies.  Below is my interpretation of the difference. Can someone correct, confirm, or provide a good reference for me so that I can properly understand & explain the real differences in retention policies to management.

1.       Retention policies can only be used on the default folders of a mailbox. Those include the Inbox (root of inbox only and not folders inside inbox), Deleted, Sent, & Drafts folders only. Any non-default created folder inside of a mailbox cannot be assigned to a retention policy.
2.       Because Exchange 2013 In Place Archive is only an option for Enterprise CALs we cannot use Auto-archiving in the retention policies. We can only set the retention policies to delete the messages that meet the defined age requirement within only a portion of a persons mailbox.