If you attempt to check-in online and you are given a stand-by reference number it says underneath that you still need to front up at the airport and register at least 60mins before departure. If it allows you to "pseudo check-in" (select a seat), it says you need to front up to collect your actual boarding pass and drop off your bags at least 45mins before departure. Exactly the same procedures as for online check-in under the old Travel Desk system.