Basically I am going to be taking my ipad into a non Wifi area for a while and plan to play on a lot of my games. When you open a game offline it usually says 'could not connect to Game Center". So if I unlock Game Center achievements while offline will they sync when I go back online?
Most frequently they won't, I've lost dozens of achievements due to this. Hope iOS 5 fixes the (unforgivable) lack of native offline sync for GC achievs.