Agree with this
Played over the Christmas period - as guests and children and dogs would allow. Didn't notice any issues.
Having a great time with it.
Re the solo mode - it requires such low bandwidth that you can play it with your mobile phone (3G) as a WiFi hotspot on a train...
I think most of the +tive players will be just playing, and all the -tive ones will be whining about it.