Waiting for a Free Spins round
Deciding to start a session means accepting that nobody can predict when the Free Spins round will arrive. The number of spins before it lands is not known in advance, and the result of one session is random whatever the RTP shown in the rules. Two players who bet the same amount can see very different outcomes.
Checking the RTP before you bet means opening the game rules. The version this game runs is shown only there, so that is where to confirm it. Once you have read the figure, you know exactly which RTP applies to this game.
Deciding how high to aim means knowing the ceiling first. The maximum win is x6,000 of the bet, and the Free Spins round ends the moment its total win reaches that figure. Reaching the ceiling is very rare, and no one can say in advance whether a given session will get near it.