Originally Posted by BritBoyInSC
Agreed, that is the normal policy, but Delta have almost the first 5 rows (except the row in front of the first emergency exit row) blocked in Coach, for EVERY flight throught September and October (Yes - I checked = sad).
And, they will not release them to me and my wife, both of whom are platinum and both of whom have sat in 100+ Delta exit rows !
= VERY WEIRD .........
PS : It does not change even if I ask for a FULL COACH Y fare at $3,750 ! I still have to pick from the NON exit row NON bulk head seats. Also, interesting to note that on this flight (767), they show the row in front of the exit row as being a premium seat, and it does NOT recline ! = WOW !
I'm not going to challenge your thorough research.

I have noticed from time to time, that blocks of seats on some flights appear held, usually in the front of the cabin and just wondered why.
I also wonder about the variable number of rows designated for elite customers. It can be 2 rows on the outbound and 6 rows (same a/c) on the return. DL, in particular, seems to have hired a bunch of folks that flunked Statistics in College. (So did I - it's possible I'm the one who doesn't understand).