Hey!
It looks like it has a roof. Is this the first TC area that has had a roof? No teams sitting out in a dark and stormy night?
It took some digging, but the answer to your question is no. This is not the first TC are that has had a roof.
The first TC to be held under roof was season 4, Survivor: Marquesas. Of course then it was a thatched roof on a log pole structure, but a roof none the less.
Next came season 5, Survivor: Thailand with TC held in a replica of a temple on stilts out over the water.
And lastly, we had Survivor-Panama: Exile Island which was held in a man made cave.