Not quite. More important than the seat map is the availability. DL is still selling seats on that flight, so they think they will be able to get everybody on.
[KVS Availability Tool 6.1.9901.B3/Diamond - Sabre: Availability/GTC/US-LTR]
Code:
ATL Atlanta Hartsfield-Jackson Intl GA US [KATL]
OKC Oklahoma City Will Rogers World OK US [KOKC]
WED 04 May 2011
Carrier Flight From Depart To Arrive A/C St Availability
--------- ------ ---- -------- ---- -------- --- -- --------------------------------------
DL 5289 ATL 08:20 OKC 09:33 CR7 0 F3 P2 A2 Y9 B9 M9 H8 Q8 K7 L7 U7 T4 E3
Also, the seats aren't really all taken... there are seats farther up that are empty, but they are preferred seats and I'm guessing you don't hold Medallion status as you aren't able to see them.
[KVS Availability Tool 6.1.9901.B3/Diamond - Amadeus Seat Map: 04 May 2011/DL 5289/ATL-OKC/CR7/Y-Economy]
Code:
A B | C D
4 - - - -
5 - - + -
6 + + - +
7 - + + +
12 E + + + + W
17 - - - -
[+] Available [-] Unavailable [E] Exit Row
[W] Wing [L] Lavatory [U] Upper Deck