The most reliable way to ensure a valid card with no extra fees is to buy directly from the source:

Mastro's gift cards can be purchased directly from (in-person or online), through Landry’s corporate site, and via several third-party digital marketplaces . Because Mastro's is part of the Landry's family, their gift cards are often interchangeable with other Landry's brands like Morton’s The Steakhouse or Rainforest Café. Direct Purchase Options

Several online platforms offer Mastro's gift cards, sometimes with added benefits like cashback or crypto payment options: Frequently Asked Questions - Mastro's Restaurants

: You can buy Landry’s Select Gift Cards which are redeemable at all Mastro’s locations and over 600 other Landry's-owned restaurants. Third-Party Retailers & Digital Marketplaces