I really don't think that 1k into the wilderness is all that dangerous. At night if you are only 1k from civilization, you can still hear cars. Talking to someone like they've never been outside may have been more of an insult than a help. Even if they don't find food for 3 days, chances are they wont die from starvation. I don't think it could be considered survival unless you have a chance to get good and hungry. Sounds like a fun camping trip to me and I think they should do it. My only suggestions would be to research the area and take water.