All the mods and deluxes have them, and I think they were installed back in 2005, but it may have been later. I remember them being installed when we stayed at the POFQ, but we stayed there in 04, 05 and 06 so I am not sure which year we had the fridge.
They do not have a freezer compartment (at least the ones I had have not had one). I was at the CSR just this past week and the fridge I had kept my things nice and cold, I had no problems. When you check into your room, just check the thermostat in the fridge because mine was turned down I just adjusted it right away and then it got cold quickly.