Finalizing a disc

I BOUGH A SAMSUMG CAMCORDER DURING CHRISTMAS. I TOOK THE RECORDER TO GEORGIA AND FILMED BY 2 YEAR OLD GRANDSONS BIRTHDAY PARTY. I WAS NOT PLEASED WITH THE CAMCORDER. THE BATTERY POWER ONLY LAST ABOUT 20 MINUTES AND AN ELECTRICAL OUTLET WAS NOT AVAILABLE. WHEN I RETURNED HOME I TOOK THE CAMERA BACK AND BROUGHT A DIFFERENT CAMERA. NOW THAT I WANT TO PLAY BACK THE DISC OF THE PARTY, I FIND THAT IT WILL NOT PLAY IN BY DVD PLAYER OR IN MY NEW CAMCORDER. I HAVE ALSO BEEN TOLD THAT IT WON'T PLAY BECAUSE I DID NOT FINALIZE IT. MY QUESTION IS; CAN THAT BIRTHDAY PARTY BE EXTRACTED FROM THAT DISC WITHOUT IT BEING FINALIZED?