Returning fro ma slight hiatus on these spoilers, here are the ones from tonight's episode:
The reward challenge will be the classic pecking order chop competition. It looks like Amanda is going to win and take Todd with her on the overnight boat trip. Speculation is also that Courtney gets invited along to keep her in line with the alliance.
Not much is known about the immunity challenge, but it seems to be another sort of questions based challenge. It is know however that PG wins immunity.
The boot seems likely to be Frosti since PG can't be voted out. Todd wants Frosti and Courtney's romance to end.