I’d do it for free. OK, I’d much prefer to earn at least as much as I lost in wages, so $10,000 would be OK. Does anyone know what the prizes are after #1 and #2?
I am very good at Surviving, I can start a fire, catch fish, etc.
I am fairly good in social situations, but since I’d likely be a “Leader” they’d vote me out quickly, joining silenus. 
I figure I’d have absolutely zilch luck in surviving the politics, but I’d welcome the opportunity to test my survivalist skills in a really wild setting… for about twenty-four hours. After that, I’d be miserable.
The only benefit I could realistically hope for would be being forced to lose weight, like Bette Midler’s character who’s kidnapped and held for ransom in Ruthless People. “Twenty pounds? I lost twenty pounds? For real??? Omigod!! Twenty pounds!!..” 
I’m pretty sure I could live rough for a month if I had to, but that show? Nope, not for a million dollars. Rewards backstabbing and lying, to some degree, you see. I don’t feel I should support that sort of thing.
Ok…DrDeth, NurseCarmen (what a combination!) and I would just have to chill at the hotel for a few days, strategize, hijack a crew boat and come back and trounce the rest of those pantywaists. A few deadfalls, a tiger trap or two, the odd garroting in the dark, and bingo! We’re in the Final Three. A quick deal with Probst (he gives all the money for the top three spots and we don’t feed him to whatever nasties live in the area) and we head back to Civilization quite a bit richer, and 17 losers are left on an island to die, playing politics with each other until the bitter end.