Currently using the DotMM Companion while running the campaign. This a a truly transformative product for this adventure. I would go so far as to say it's an essential purchase for any DM running DotMM. It takes a great pre-existing dungeon and turns it into a great adventure. Of course you will not use every idea in the Companion - but even using 1/3rd of the ideas it contains will enrich your campaign. This is one of the most impressive products on DMsGuild imo.
[5 of 5 Stars!]