What wins the first dance

Exploration Stage: River of Oblivion
From: Salem
Description: The Ball of the Immortals will last until the end of the "Long Zero Hour," which occurs only during the red moon. The first guest to arrive at the ball will have the right to ask me for the first dance under the red moon. Will you help me find my dance card?
Completed: You found a downscale card that fits my costume well! I'm sure many of the guests at the ball will want to dance with the Queen of the Night. I am sure they will sign up in advance. I must write down the number of the dance and the name of the dance partner on the dance card so that I don't forget whose request I accepted.