Open the refrigerator door as little as possible so cold air stays inside until the power is restored. Remember, meats spoil quickly at room temperatures above 40 degrees. Other foods that spoil quickly are custards, creamed foods, and foods containing mayonnaise.
Food will stay frozen for about 2 days in a full freeze. Food may be refrozen if it still contains some ice crystals. If in doubt, throw it out. Adding dry ice to a freezer will help keep food frozen.