In empire strikes back luke almost froze to death on hoth.
Heres a thought.........What if Han Solo chose the wrong Hoth and went to Hot #3 instead of Hoth #2? Do you think Luke would have froze to death before Han would have realized he was searching on the wrong Hoth?
That's dumb. Han is obviously on Luke's friend list. Luke whispered Han to group with him, and when he did, Han got the loading screen and was moved to Luke's Hoth.