Well it seems Frankie was trolling and the Restuarant has little to no significance, i know have reason to believe the remake map is Valhalla, with strong evidence seeing as a screenshot from gameplay at i believe is EuroGamer, clearly Resembles Valhalla.
Gotta say i’m sad it’s not Sandtrap, my hopes for mammoths in Multiplayer/Forge/Custom Games, are slipping away but Valhalla was probably my Favourite BTB map in Halo 3, it just pisses me off that Frankie said it wouldn’t be a blood gulch remake, so they remade the map closest to it.
Can’t post the screenshots due to it being leaked content, i don’t know if i’m even allowed to talk about it.
ORIGINAL POST
First off, sorry if there are many topics on this already, but upon the suggestion of IEPIC IMURPH i’m going to put my theory in my own thread.
First off, Frankie went to a Restaurant and hinted that it has somehting to do with the remake map.
The RESTAURANT is the hint. He later says, it has nothing to do with mexico, however, if we go inside the restaurant using google street view, we can see there is a painting on the wall next to one of the tables, this is the painting as you can see it clearly resembles Sandtrap, i can’t post a direct link to the street view, but if you don’t believe that the image is in the restaurant look for yourself.
Perhaps Frankie sat down and used this painting as inspiration as it probably reminded him of Sandtrap, others are speculating Longshore or terminal, because it’s close to a dock or because it’s close to a train station, you’re getting it wrong, the clue is the RESTAURANT ITSELF, not the area, i highly doubt Frankie sat down planning the area of the restaurant just to confuse us, then again this is just speculation, but this is probably the most solid speculation we have.
feel free to discuss.

Plus, with the incentive to involve the new Mammoths, it looks like Sandtrap is a strong contender!