It's cool to play with, but I still prefer a notebook/laptop, I wouldn't know what to do with a tab, except browse some web sites and enjoy the pinch to zoom :P
The game has been in the making forever, so tell me is it really that good? I mean I loved the previous titles, even the first one was quite detailed, alot of stuff to do....How does it compare to, I dunno, Forza Motorsports?
Some Routers will never let you access from the "outside" be sure to test this on a different connection than your home connection. Apart from making sure that you have forwarded the ports to the Server internal LAN IP. So don't use DHCP, unless you have an option in your router to setup static...