Yea, this was very easy to implement: "license add [license#]" - done.
Since we are using this on a disaster recovery/development environment, I am going to be cloning SnapMirror destination volumes. It appears that FlexClone attempts to create a snapshot, if one is not specified, when creating the cloned volume. This is a great feature, but just keep in mind that you cannot create new snapshots directly on the (read-only) destination volumes. So you have to have already created a snapshot and replicated it over to the volume, and then specify the snapshot when cloning the LUN. Just a little tidbit, if anyone is interested.