The clue here is business days. The monday and tuesday 27/28 December are actually counted as holidays, no snail mail no courier, no bank etc. I too was waiting like an impatient child as well. got an email about it last night around 1 am.
Manually selecting the network prevents accidental roaming charges by locking you to your carrier. Yes some might need to move to alternative native carrier options. But locking to ones native Carrier prevents unintended roaming to alternative networ...
