Originally Posted by
maton
I don't know if it depends on the property or region, but from my experience in the US the free breakfast with status covers up to 2 guests per room and 2 rooms. If your wife has gold, then it's safer to book the second room under her name.
Gold vs. Diamond on cash booking means less bonus points. I believe policy is two rooms, 2 per room. So Diamond would be more beneficial.