Inside the dark, glamorous world of millionaire 'whales' at casinos, who receive ridiculous perks and are under harsh scrutiny since the Las Vegas shooting

The life of a Las Vegas high-roller is the stuff of fantasy. Penthouse suites, gourmet meals, VIP concerts - and, most of it doesn't even come out of gamblers' pockets.

It's in casinos' interest to convince gamblers to come back again and again, and to stay as long as possible - often in the resort attached to the casino. So, they roll out the red carpet and pile on the perks.

However, there have been questions recently as to if these perks could be abused after Las Vegas shooter Stephen Paddock was reportedly given access to the Mandalay Bay freight elevator as a "perk" due to his high-roller status.

Here's a look into the lives of high-rollers - and what exactly these perks involve.