When does the bonus round land?
On each spin of the 7x7 grid, the bonus round may or may not start, and nothing on the screen shows when it will. How often Sticky Bees reaches its Free Spins is not known in advance. The result of one session is random too, whatever RTP version the game runs on, so a short session can end far above or below the RTP figure.
On the reels, Sticky Bees runs on one of two RTP versions, and the game rules show which one is live. Check them before the first spin, because the two versions return different amounts over the long run.
Cluster wins and tumbles can stack on the reels, but the top of the range is a ceiling reached very rarely. Inside Free Spins, a round ends early once that cap is reached. Treat the maximum win as a rare outcome, not something a session is built around.