I had a play, and tried to capture some enemy portals, but didn't have much luck... I could only see 4 portals on the map, three are in the red-zone and inaccessible. The other I could hack, but I couldn't XMP it.
To anyone wanting an invite, submit yourself on ingress.com website ASAP. I had to wait a week or so.
Edit: and I ordered a spare 3800mAh battery, the game sucks the juice.