You can't imagine how much I love these rewards. It's easy for me to wager $500 by playing blackjack only and I won't lose a lot of money. $10 is enough for me to have lots of blackjack sessions and I get a lot of fun at the same time. I'm gonna wager $500 every week to get good free spins at random weeks.
What type of blackjack you are playing? Live games or the house game? Live games blackjack usually have 5$ minimum which is so hard to accumulate wager by using small bankroll.
However, Blackjack is indeed the best game to accumulate wager safely if you want to play the perfect blackjack strategy.
For me, Plinko is my safest game to accumulate wager.
I play live BlackJack, mostly on Evolution's live tables. Live Blackjacks usually have a 5$ minimum bet, but that's only if you want to have your seat at the table. If you bet behind, then you can bet 1$ but I don't like betting behind because I don't trust other gamblers and I don't have fun when I'm in spectator mode but don't worry, there is a solution. I play Evolution's infinite blackjack. There is a dealer and only one player
sits's sit, where the dealer deals the cards. You can make choices on your own, you can split if you want or don't split, you can hit bet if you want and the decision of other people won't affect your session. On infinite blackjack tables, you can place as low as 1$ bet. You can also use the cash-out option if you think that you have a low chance of winning.