Sweet Bonanza's limits and open questions
Deciding how much to stake on Sweet Bonanza means accepting one fact: the bonus round arrives on no timetable you can read in advance. How often it comes is not known before you play, and the result of one session is random, whichever RTP version runs.
Choosing a stake level on Sweet Bonanza also means knowing which RTP version this lobby runs. That detail is shown only in the game rules, so read them before you commit money to a spin. The two versions sit close together on return, so read the figures in the table before you decide.
Chasing the top prize on Sweet Bonanza means accepting that the maximum win is a ceiling, not a target. It is reached very rarely, so set your stake by what you can afford to lose, not by that ceiling.