No, not for your front and back door. A Nest Aware subscription covers all of the cameras and doorbells in the same Google Nest "home/structure" on the same Google Account. You would only need two subscriptions if you had 2 Wi-Fi networks at two locations and therefore had to set up separate Google Nest "homes". All of our cameras and doorbells in our house are on the same $120/year subscription.
If you go to Settings | Nest Aware in the Google Home app (or Google Nest app for older cameras) while connected to the Google Nest "home/structure" that contains both cameras, it should show your Nest Aware Plus subscription. If you go to each camera and select Settings | Nest Aware, it should also show your subscription.
@JJflash thanks for reaching out here in the Community and for sharing with us your concern. Were you able to see the last post of MplsCustomer? Make sure your Nest Cameras are in the home structure where your Nest Aware is applied. The 2nd gen Nest Aware subscription will be applied to the whole home structure not per device. Hit this link for more information. Let me know how it goes.
Just checking in on this thread and the activity on it. We'll leave this topic open for another 24 hours in case there are any follow-up questions or comments.
