Unpredictable results and feature frequency
Deciding how long to play Sweet Bonanza 1000 means accepting one fact first: the bonus round cannot be timed. Nobody can say in advance how often the free spins will come, and the result of one session is random whatever the RTP. The RTP describes the long-run return on A$100 staked, not the outcome of your next hour.
Choosing an RTP version starts with knowing which one 77 Casino runs, because that detail appears only in the game rules. Check the rules before the first spin, not after a long losing run. Each version carries its own return, so compare the figures before you choose one.
Planning around the top prize means treating it as a ceiling, not a target. The maximum win of Sweet Bonanza 1000 is 25,000 times the bet, and a win that size is reached very rarely. Set your stake by what you can afford to lose, not by the ceiling.