Casinos have a wide definition of fraud. This may not be "criminal fraud", but merely a breach of the terms by being very clever. If all the details given were of genuine people, but one player actually operated the accounts, it would be hard to find evidence of fraud that stood up in a criminal court, as the act of playing your friend's account is just a breach of the terms, and in other businesses, this kind of thing is not a problem. I can pay for my niece's shopping with my credit card, the shop gets paid, and it's my problem getting the money back. If, however, I use my card to deposit into my niece's casino account, and tell her what game to play, how to play, and when to withdraw, the casino will view this as fraud, but in law it is merely a breach of the terms. Fraud in the criminal sense would only apply if the card was stolen, or the payment was deliberately charged back after winnings were paid out, or losses incurred.
In a case like this, the breach is dealt with by voiding the contract, which in practical terms means sending the deposit back to the player, and banning them from the casino.
In a famous London casino case, a group of players beat Roulette by using a laser sensing device attached to a small computer to predict which sector the ball would land in, and they would get their bets in just before betting closed. The casino went to court to recover winnings already paid out before they were caught, and LOST. The ruling indicated that remote sensing did not actually "interfere with the outcomes", so no actual "cheating" took place. This left the casino with only the option to bar the group from further play under their terms of admission. I don't think there were laws, unlike Nevada, that made such devices specifically illegal.
Card counting is not illegal, even in Vegas, but if spotted, casinos can use their right to refuse admission.