3Gs...
Disagree slightly. National & airline rules might vary, but to Autoland at all, we need the airfield to have been surveyed and have eqpt essentially to CAT3 standard. The protections need not be in force, but the eqpt still working. In short, on the BA Airbus, we fly to many airfields / runways (maybe 50%?) where Autoland is not permitted at all...
For the A380 airfields unlikely a great problem, except that doing a "practice Autoland" is, IMHO, more demanding than either a manual land or an Autoland - you have to be ready to intervene at very short notice to "take over", which inevitably demands a high level of experience in manual landing...
The A380 will be distinctly unpopular if it demands the CAT3 protections in force.... Suspect this is just a rumour <G>