A way to measure success in post smartphone era weekends is to ask:
How many times did you forget where your smartphone was?
On some particularly memorable weekends, I found myself completely disinterested in my phone for long periods of time.
As a result, I have started beginning weekends by placing my phone in inconspicuous locations around the house [e.g. under the pillow].
The more obscure the place, the fewer often I check it, and the better the weekend is going to be for it.