You can turn off lottery in your profile and you get reward points instead. If you save up 100,000 of them then you can exchange them for 1 Satoshi each.
I did turn it off, but it applies only to lottery tickets received from free btc rolls, not multiply btc
most of my lottery tickets are gained from my own multiply btc plays

not referrals' free rolls
I have quite good amount on Reward Points because of multiply btc too, specially in 4x/5x RP bonus weekend
If this option is checked, you will receive reward points instead of lottery tickets at a 1:1 ratio for all future FREE BTC rolls that you or your referrals play. This will not apply to any lottery tickets bonus that you activate using your reward points.