For the Digital Photo Frame, what is the difference between having my own Premium One subscription and using another member’s Premium Family subscription?

If you subscribe to Premium One yourself, you can use Premium features on your Digital Photo Frame for every album you belong to, including:

If another member has Premium Family or Premium Family Pro, you can use Premium features for the album covered by their subscription.

To use Premium features for every album you belong to, you’ll need your own Premium One, Premium Family, or Premium Family Pro subscription.