1-2 slots? For 50$?? This is honestly a lot, I would rather take small sessions since I did hear once that your probability of Winning in the penny slots is much more as compared to the normal ones. Therefore you might as well try and split them up more.
I usually play slot games with min bet $0.2 up to $0.5, so $50 is basically not that much for one gambling session with that min bet.
$50 can cover at least few hundred spins with 0.2-0.5 unless the bad luck is coming and I got so many dead spins.
Penny slot? Is this type of slot games where you can bet with less than a cent?