Wow, I just realized that the ONLY seasons without some sort of tribal switch-up were Borneo, Australia*, Thailand**, Pearl Islands, Palau & Exile Island***! Only 6 out of 17 seasons! I had forgotten that it was so few...

* - Although Burnett has said that he planned the Africa switch-up to happen during this season, except Ogakor kept losing in the beginning so the numbers weren't even.

** - Although there WAS an offer to switch tribes, it's just that nobody took it.

*** - Depends on whether you consider the 4 tribes splitting into 2 during the second episode a switch-up.