What are common routes from Shadowdale to Waterdeep?

The party I DM has completed their adventures in the Dalelands (Shadowdale and Daggerdale) and wants to travel to Waterdeep. The party is fairly low level, so their travel will be non-magical and not too expensive. The time period is the 1350s DR, the geography is similar to 5e but not to 4e. What are common routes from Shadowdale to Waterdeep? Bonus points for the time various routes take.

How large is Waterdeep?

I’m going to be running Waterdeep: Dragon Heist for my group soon. As part of this I would like to work out how long it would take characters to travel around the city on foot, both from top to bottom, and from side to side. In order to do this I need to figure out the scale of the city.

There is a wonderful map provided with the adventure, however it has no scale attached to it, or at least none I can find!

Is there official material which details the size of Waterdeep in geographic terms?

Was Dweomercore created for Waterdeep: Dungeon of the Mad Mage?

Did Dweomercore, Halaster’s magic academy in Undermountain, exist in any published Forgotten Realms lore prior to Waterdeep: Dungeon of the Mad Mage? If so, where? Or was Dweomercore created for Waterdeep: Dungeon of the Mad Mage?

A web search doesn’t turn up much, but here is one online post that states, "In older lore, I recall Trobriand actually set up Dweomercore…"

Where is Gralhund Villa located within Waterdeep?

In Waterdeep: Dragon Heist, a significant portion of one of the chapters takes place in "Gralhund Villa".

There are locations given for several of the noble Houses in the first chapter, but I can’t find anything giving even an approximate location for Gralhund Villa. I’ve marked this question as 5e, but will accept information from any edition.

Where is Gralhund Villa located within Waterdeep?

In Waterdeep, is magistrate another word for magister?

In Waterdeep: Dragon Heist, both magistrates and magisters are mentioned throughout. The lore chapter, ch. 9, "Volo’s Waterdeep Enchiridion," discusses the role of magister in depth, but does not mention magistrates.

Is magistrate another word for magister, or is it a separate office?

Note: I know that the term "Magister" has another meaning in the Forgotten Realms. I am not looking for information about this type of Magister.

What is a cordwainer in Waterdeep?

One of Waterdeep’s many guilds is the Most Diligent League of Sail-makers and Cordwainers (Waterdeep: Dragon Heist, introduction). What is a cordwainer in this context?

Merriam-Webster defines a cordwainer as a shoemaker, or a worker in Cordovan leather (archaic). Wikipedia has an article on cordwainers in the shoemaker sense. But Waterdeep already has an Order of Cobblers and Corvisers and a League of Skinners and Tanners. Cordwainers are in a guild together with sail-makers, so it stands to reason that they would have some sort of connection to sail making.

Any D&D/Forgotten Realms source is acceptable.

What is a joiner in Waterdeep?

One of Waterdeep’s many guilds is the Fellowship of Salters, Packers, and Joiners (Waterdeep: Dragon Heist, introduction). What is a joiner in this context?

Merriam-Webster defines a joiner as a craftsperson who joins pieces of wood. Wikipedia has an article on joiners in the same sense. But Waterdeep already has several guilds related to building things out of wood. It stands to reason that joiners would have some sort of connection to salting and packing food.

Any D&D/Forgotten Realms source is acceptable.

What is the scene depicted in the second “Waterdeep Digital Background” art?

In the Free Remote D&D Resources archive that Wizards of the Coast is providing, for April 30, 2020 there is a “Waterdeep Digital Backgrounds” zip file that includes artwork that one might be able to use as a background while videoconferencing. The second file (named “DnD_Video_bg-WDDH2”) looks to be a scene outside of Waterdeep proper, with people along a path, a building (maybe some kind of temple), and the wall of Waterdeep in the background. I’m presuming putting a smaller version here counts as fair use:

Waterdeep scene 2

What is that building, and more generally where is this scene set? Is it part of the Waterdeep: Dragon Heist book or storyline? (I don’t remember seeing it in there, though probably I just missed it, but the filename saying “WDDH” makes me think it’s related.)