The resort fee is $20/day, but wireless internet is $15/day/device, which I assume applies if you ditch the resort fee. I didn't contest the resort fee and all of our devices worked including 2x laptops and 2x smartphones. Doubt if this would be a better deal paying by the device.
I would have liked to see if the resort-fee access to the Canyon Ranch Fitness Center includes all of the spa, but I chose to swim instead.