More earning power: get 5% back (in comps) anytime you use your card.Visit the Rewards Center inside the casino to sign up and receive $5 - $500 in free slot play! Must be 21 years of age or older to participate. You’ll earn valuable comps when you stay in our hotel, receive a massage, dine and play slots and table games. Everywhere you go at Thunder Valley Casino Resort, the comps add up as you play, relax, wine, and dine. From the destination that surrounds you in excitement and luxury, we bring you the card that goes above and beyond.