I guess that you have engaged yourself too much in gambling or you are thinking of going to a casino before you slept. This are some reasons that might make one dream about playing in a casino. I was thinking one evening that if I can just hit the jackpot someday,and I guess what that night when I slept. I saw myself in a big casino,where I was celebrated for winning the highest amount ever in the casino. Unknown to me that it was a dream not until my alarm clock rang and I woke up to realize it was a mere dream. I then remembered why I dreamt such dream,so this isn't something new to human.
Well, I think that we all have dreamed of this type of thing, even if we are awake, the fact that when we rest and dream this can be for various reasons, it could be because we want it a lot, another could be because maybe we have played a lot during the day and we are in our brain with that restlessness, the other reason is that since we have played so much , Perhaps our brain will be very aware of the plays and unconsciously it will be working and putting together strategies, when we are very concentrated in an activity that can Happen.
In this case, we can keep that in mind, it happened to me very often at university, especially with the math exercises that sometimes I couldn't solve, perhaps due to tiredness and exhaustion, so I dreamed of solving those exercises and It just so happens that when I dreamed of doing them, that was the solution, I'm crazy things that happen but it's because the brain is so activated that that's how it works.
Now there may be other reasons, perhaps the desire to win a big prize or to be in a casino celebrating is something that is so desperate that in dreams everything is Possible , in fact it is Said where I live that when one dreams of something, and that something one wants to happen, the dream should not be told to make it come true, in truth I know that they are beliefs, but somehow it fits with all that about dreams and the mysteries that they can bring, others can interpret that I dream as something very big that is about to happen to the person and that it is only a warning of how big it is going to be , so you have to see it in a positive Way , from any point of view it is not something negative, it is something that can be help to get a good Self-esteem.
And when we are in a casino, not because we dream of that, we have to think that we are not going to place big bets to be able to win big as in the dream , because otherwise we could lose everything so we have to know how to Control those things and Obviously it goes together to Emotions.