Oceanside or the group we met at the end of episode 7.09 "Rock in the Road" does not appear in the comic books.
The stretch of highway for walker limbo in season 7 was also the same stretch they used for the season 2 roadblock where Sophia was lost.
Negan hit Glenn 17 times with Lucille.
Greg Nicotero's children, Alyssa and Devon (in the plaid in both pictures), appeared in The Kingdom scene with the bows and arrows. It was there first cameo in the series.
it took 2 days to film the walker limbo and high scenes. They filmed in one direction on day one and the other direction on day two.