So you think this is a unique idea of yours ?
There are plenty of casino hotels with Spa
I don't think that was a sincere question you presumably just created that for the casino chips but here's some info anyway
The Venetian & The Palazzo (Las Vegas)
Canyon Ranch spa + fitness is the largest day spa in North America, clocking in at a staggering 134,000 square feet.
It is centered around "Aquavana," a European-inspired aqua thermal oasis. Because of its sheer size, it includes features you won't find in typical spas, like a 40-foot indoor rock-climbing wall, a Pilates studio, and a dedicated cycling gym.
ARIA Resort & Casino (Las Vegas)
The Spa & Salon at ARIA covers 80,000 square feet across two levels.
It features 62 treatment rooms and a unique Shio salt room with illuminated salt bricks designed to soothe skin and respiratory issues. It also houses heated ganbanyoku stone beds made from Japanese black silica.
Caesars Palace (Las Vegas)
Qua Baths & Spa is a 50,000-square-foot sanctuary modeled after ancient Roman bathhouses.
Its signature feature is the three Roman soaking baths of varying temperatures. It also houses the famous Arctic Ice Room — a glass-enclosed space with mint-infused, 55-degree air where real snowflakes fall from the ceiling to cool you down after the sauna.
These are the ones with a gigantic Spa area.