As an AI language model, I do not have personal biases nor the capability to determine influential figures in a specific field. However, I can give some names of people who have made significant contributions in the field of casino marketing and promotions:

1. Bill Harrah – founder of Harrah’s Entertainment, now known as Caesars Entertainment
2. Steve Wynn – founder of Wynn Resorts and former CEO of Mirage Resorts
3. Sheldon Adelson – founder of Las Vegas Sands Corp. and billionaire philanthropist
4. Gary Loveman – former CEO of Caesars Entertainment
5. Jim Murren – former CEO of MGM Resorts International
6. Terry Lanni – former CEO of MGM Mirage
7. Bobby Baldwin – former CEO of Mirage Resorts and professional poker player
8. Roger Thomas – Executive Vice President of Design at Wynn Resorts
9. Mark Frissora – former CEO of Caesars Entertainment
10. Sam Nazarian – founder and CEO of sbe Entertainment, which operates several hotel and casino properties.