Anticipation for Black Panther was high. How high? So high that according to movie ticket retailer Fandango no other film in the Marvel Cinematic Universe had sold more presale tickets in 24 hours than Black Panther did in January, a full month before it hit theaters. "It’s one of the biggest and most anticipated movies to ever open in the month of February," said Fandango editor Erik Davis."
This record was eventually beaten by Avengers: Infinity War, which isn't surprising given the magnitude of what Infinity War means for the MCU overall.