Wait untill the aircraft is on a remote stand. At Cardiff the 3 main stands we used all had a computer terminal but stands 1 and 14 were remote. Stand 1 was a good 5 min walk from a computer and stand 14 could only be accessed by crossing a live taxiway and by car. Servisair don't have a ramp car at Cardiff so those of us with a driving permit used the worlds gipsyish Land Rover untill it died. We then had to try and blag a noddy cart off Airway handling but as is the norm, they were all in use towing baggage trollies. Plenty of times I used a bus just to get back and forth. Twas ok with long haul because there was two of us. One in the building (sending the masks) and one at the a/c.