I posted a follow-up with an outside link, but I guess it's getting moderated.
But it seems the ice-service I've seen is Vintage camping only. Sorry for the misdirection.
Whoops...according to post #57 on this thread it might only be a Vintage camping thing. Sorry :dunno:
http://www.oshkosh365.org/ok365_DiscussionBoardTopic.aspx?id=1235&boardid=147&forumid=177&topicid=5138&page=3