Hi, I booked on Priceline 6 nights at the MGM Grand (sunday thru saturday). I chose the lowest rate which was for a Petite King, not quite knowing exactly what it was. I looked up the Petite King rooms online and I'm not to thrilled with them (too small and bathroom not very private) I called Priceline to ask for an Upgrade and they direct me to MGM. I called MGM and they tell me to call Priceline. Would it be reasonable to request an upgrade from petite king to grand king at check-in ? Are these kind of upgrades ever offered at MGM?