Surface temperature is the thing people underestimate. A dark stamped patio in Bullhead City or Lake Havasu City in July is genuinely too hot to stand on barefoot. Lighter integral colours, exposed aggregate, or shade planned into the layout all help more than any product does.
On the upland side, freeze-thaw is the constraint instead. Any patio in Kingman, Valle Vista or Chloride that will sit under snowmelt or winter runoff wants air entrainment and a properly cured surface, or it will start losing its face in a few seasons.
Monsoon runoff decides where a patio can go at all. If the natural sheet flow across your lot runs through the spot you had in mind, the slab either needs to sit above it or the water needs somewhere else to go. That is a conversation to have at the estimate, not after the forms are up.