Almost all Asian Massage shops off the Strip offer extras. Every small strip mall seems to have a parlour.
In my experience, based on living in the area for s number of years, a place that offers "table showers" is a nailed on dead cert.
Even the "foot spas " tend to offer extras. If you're there in hot weather wear shorts and go commando and in no time the hands will wander well above foot/ankle level.
Quite a few places will offer FS. Sadly, my previous "go-to" establishment, Queen Vixen near Sunset Station Casino is no more