Complex sentence: After each act, eliminated players (including the ones who lost the bonus round) get to ride a surfboard and have water sprayed on them, while the grand prize winner has slimed poured down on him/her.
Split into simpler sentences: After each act, eliminated players including the ones who lost the bonus round get to ride a surfboard and have water sprayed on them. While the grand prize winner has slimed poured down on him/her.