Regardless of whether or not the flight attendants brief the entire row, the following seats are not considered exit seats:
Airbus A321 (LAA standard configuration)
12ABC
Boeing 767-300 (all versions)
20CEG
21CEG
Boeing 787-8
20DEH
Airbus A330-200
23CDEF
Airbus A330-300
25CDEF
Boeing 777-200 (3-class)
30CDEFG
31CDEFG
Boeing 777-200 (all 2-class retrofit versions)
26DEGH
Boeing 777-300ER
16DEH
33DEGH