We stayed at the Poly for 1 night this past July and another nght this past August(2 rooms that time). There were small fridges in the rooms each time, and we never requested them or paid for them.
Yes they charge $10 a day for a small refrigerator big enough for some sodas or waters. There is also a tiny little freezer section about big enough for an icecream bar. You may get one complimentary if you are in concierge I think.