Read the RTP version in the game rules
Decide your session budget before the first spin, because nobody can know when the bonus round will come. How often it comes is not known in advance. The result of one session is random whatever the RTP, so a session can finish above or below the amount you started with.
Open the game rules before the first spin to find out which RTP version runs here. That version is shown only in the game rules, so the rules are the place to check it. Then decide how much you are willing to stake on Santa's Slay.
Treat the maximum win as a ceiling, not as a target for one session. The top prize is a multiple of the bet and is reached very rarely. No player can count on it, and the figure says nothing about how any single session will end.