For all you who don't know, rendezvous is a recreation of fur trappers of old bringing their furs they have collected and giving them to the men(normally from St. Louis) who came to a prearranged meeting place to take the furs back east to sell. They often traded and swapped stories and news. Nowadays you can still visit a historic rendezvous where you can see volunteers who love history, act as a character or other person from the fur trade era.
If you have period clothes and a place to stay you can even take part in it yourself!