Thanks for reading Andrews and Bernie!
Yes, a year-round OOL-ZQN-OOL service would never be successful, at least at the moment - a seasonal service would be the way to go I reckon.
Alot of schools did travel to Queenstown throughout the holidays, but they were mainly from the Brisbane metropolitan area - two were from Cairns and Rockhampton respectively.
Hopefully JQ can restart this service soon, would be really handy to use it as I really want to go back!