over a several week period any ace and jack clubs or jack spades gets a coupon for 3.5 x on future blackjack for one day. max bet = 250. So the extra bonus is $500 per qualifying bj.
I am estimating abut 1 qualifying bj about every 180 hands. So if you played 6 hours at about 60 per hour you could expect about 2 tickets. extra pay = $1000.
keep in mind the game without prom is terrible h17 das rsa 6 deck pen about 4 out of 6.0.
with ticket in hand would it be a positve expection game to flat bet at $250 until coupons used up?

