If you have $1,000,000
This requirement alone would not allow me to pass, so I'm not one of your target markets here. Actually, I don't believe you'll find gamblers here who bet $1 million, as those who are gambling such amounts are probably not active in the forum posting. Therefore, you are unlikely to make them use your codes.
Probably they might be here just as you have said and are likely not active because they do not do much of posting. Gamblers who are very much active here wager little amount of money not to talk $1,000,000.
With respect to using of codes, you might be lucky some one might make use of your codes in making reference to another. So it's no ot a waste of time.
Drop -1k$
I believe that what he meant by there was the $1000 bonus the casino gives on a$1,000,000 wager done by every gambler on their casino platform.