Exhibit 99.1 Caesars Entertainment, Inc. Reports First Quarter 2024 Results LAS VEGAS and RENO, Nev. (April 30, 2024) – Caesars Entertainment, Inc., (NASDAQ: CZR) (“Caesars,” “CZR,” “CEI” or “the Company”) today reported operating results for the first quarter ended March 31, 2024. First Quarter 2024 and Recent Highlights: • GAAP net revenues of $2.7 billion versus$2.8 billion for the comparable prior-year period. • GAAP net loss of $158 million compared to net loss of$136 million for the comparable prior ...