I get the impression you don't really care to hear this, but I'll give you a few quotes and then why I think going to a Las Vegas casino is wrong.
Proverbs 13:11
"Dishonest money dwindles away, but he who gathers money little by little makes it grow."
The parable beginning in Matthew 25:14
"Again, it will be like a man going on a journey, who called his servants and entrusted his property to them. 15To one he gave five talents[
a] of money, to another two talents, and to another one talent, each according to his ability. Then he went on his journey. 16The man who had received the five talents went at once and put his money to work and gained five more. 17So also, the one with the two talents gained two more. 18But the man who had received the one talent went off, dug a hole in the ground and hid his master's money.
19"After a long time the master of those servants returned and settled accounts with them. 20The man who had received the five talents brought the other five. 'Master,' he said, 'you entrusted me with five talents. See, I have gained five more.'
21"His master replied, 'Well done, good and faithful servant! You have been faithful with a few things; I will put you in charge of many things. Come and share your master's happiness!'
22"The man with the two talents also came. 'Master,' he said, 'you entrusted me with two talents; see, I have gained two more.' 23"His master replied, 'Well done, good and faithful servant! You have been faithful with a few things; I will put you in charge of many things. Come and share your master's happiness!' "
Talents are actually money coins.
Anyway I think the Bible discusses a lot how we are to be careful and thoughtful with our money, and gambling is not careful or thoughtful. Yet another reason to avoid it-- its addictive. Another reason to avoid it-- you are basically taking the bread from little children's mouths. To me it is as bad as supporting the porn industry. A lot of people go there and spend more money than they should, some people will even take their entire paycheck and then bring home nothing for their family. When you win money you are essentially taking that money.
I know that people who enjoy bringing their little sum of money and gamble it away will be mad at me, but I don't care. People who are aiming to get cloesr to Jesus don't then go and visit a casino and support that.