Pride of Driftmark

Of course! The only reasons her prophecy starts to come true is that she believes it will. The more she tries to stop it, the more it happens. She puts her children in danger while telling herself its to keep them safe, and she causes her own downfall when she goes after Margaery. It is likely meant to foreshadow Melisandre/the fandom's obsession with the Azor Ahai savior prophecy. People believe it to be real, and will sacrifice anything to make it happen.

Sea lampreys are a delicacy in Europe, and are seasonally available in France, Spain, and Portugal. In Northern Europe, they are served pickled. In the United States lampreys are considered a pest and an invasive species, historically destroying Great Lakes ecosystems. Nobody in North America eats lampreys, but if you can get them in Europe, here's a recipe: https://www.huffpost.com/entry/sea-lamprey-recipe_n_56265381e4b0bce34702343a. Eels probably taste similar (lampreys are a type of eel) and are more widely available.

Cregan's men were fleeing winter as well. It was not yet winter when Robb marched, and most don't believe in superstition about an extra long winter. Besides, Robb's war was personal and the North was invested. The Northern Lords are proud, so its likely that Jon Umber, Galbart Glover, Helman Tallhart, and Maege Mormont were trying to impress Robb with their numbers. This idea is strengthened by the fact that Lords who didn't care didn't send troops- like Barbrey Dustin, who sent as few men as possible. Cregan and the Winter Wolves didn't care about the Dance of the Dragons. It was a petty southern war, and the Pact of Ice and Fire was already unlikely to happen with winter common, and Jacaerys dead by the time the Northmen even joined the war.

It is never mentioned, but I'd posit either Barrowton or Torrhen's Square. The waters near these locations lead to the Saltspear and out to the Sunset Sea. If he wanted to build right on the ocean, either somewhere along the Stony Shore, Sea Dragon Point, or at Flint's Finger.

Either Highgarden is on the Northern side and the maps are slightly wrong, GRRM messed up, or, most likely, the raiders were from Western Dorne: the "King" who sacked Highgarden could have been a Dayne- IIRC several Daynes have sacked Oldtown, so this one probably went over the Mander and attacked Highgarden from the North.

Never heard of that, but I do recall GRRM saying he wished he had written Robb POVs. I don't think he's ever come out and said that he did.

The New Gift belongs to the Night's Watch by the writ of the Iron Throne, to attempt to reclaim it would be breaking the King's Peace. Once the Starks forswear their allegiance to the Iron Throne Robb has more important things to worry about than giving the Wulls, Liddles, and Norreys some land back.