I could not find an option to disable recieving free lotto tickets ,guess it is automatic and gonna stay this way
you are getting lottery tickets AND reward points
it means you are getting free chances to win it without doing anything at all
you get 2 lottery tickets for every free roll , so if you roll 5 times a day this is 70 lottery tickets a week
last week's first place was won with 414 tickets only , so there is always a chance to win, albeit a small one