Sun is up
Pools were a core attraction in Las Vegas hotels, and still are, due to the city’s hot climate. They were such a basic part of daily life for hotel guests, that pools even had casinos inside them, so that you never had to leave the pool to enjoy gambling.
This photo was taken in 1954 and demonstrates a floating craps table. The hotels wanted to give their customers the best vacation, and so they even had dealers inside the pools.