"Night certs" is a slang term used to refer to official documents or certificates earned by individuals who work the night shift or during nighttime hours. Full definition
I have 2 free night certs with IHG (accelerate promo) and I do feel the need to mazimize by staying at an expensive location. (pointswithacrew.com)
Yes, you get two weekend night certs, but you need to have a good redemption in mind or it's a wasted pull. (saverocity.com)
So does this mean that anyone who has a Hyatt CC will get a free night cert from the CC yearly in addition to the Discoverist free night? (viewfromthewing.boardingarea.com)