We fly out of DTW all the time and have never seen any "in flight" video service on the A320, even in first class. Just checked seatguru and it says the 757 has those services on 4 hours plus flights which DTW to MCO is not.
The A320 is a no. The 757 is a maybe. Look at the seatmap for your flight. If there are 7 rows in first class (26 seats), it is probably tv equipped. Those are the old Song planes.