From the Landry's Select Club FAQs:
Rewards may be used for food and beverage purchases. Rewards may also be used on retail purchases at participating Landry's outlets. Rewards may not be used to purchase gift cards, gift certificates, rides or games.
Rewards may not be used for tax or gratuity and in some states alcohol purchases. Rewards are issued, and must be used, in $25 increments. In addition, there is no carry-over balance for any used rewards; therefore, if member's purchase is for less than the reward amount, the remaining unused reward amount will be forfeited. Birthday Rewards cannot be used on the same visit when a Welcome Reward is redeemed.
https://www.landrysselect.com/terms--conditions/