Mary:You can store the milk in the mini bar on the Glory.
Just be warned that many of the minibars do not get cold enough to store milk at the proper temperature. I've had items spoil thinking they would be OK in the minibar "refrigerator."
There is an ice bucket in your room. You could keep the milk on ice overnight if you needed it between dinner and breakfast time. You can also order milk 24 hours a day from room service (it is customary to extend a small gratuity).
~ MattInSoCal
Proud member of the short .sig club.