Once a company is in administration any debts incurred from that point onwards are guaranteed by the administrator so there shouldn't be any problem with essential suppliers such as fuel and NAV charges, and with $700+ million in the bank Deloittes will probably allow limited flights to resume as long as the income from them exceeds the cost of operating them. They will want to keep the basics on life support just incase there is any chance of selling the airline as a going concern so the required post holders CP, HOT etc will be kept on for now.
Standby for the official announcement and see who makes a move once the creditors are formally put a bay.