9th-11th level adventure: consider Dead in Thay, or Against the Giants, in Tales from the Yawning Portal

Dead in Thay 

• 9th - 11th level
• has the Doomvault. So it's a big super dungeon. And it's in Forgotten Realms by default. 
• How Long: Pg 109 to 163. About 55 pages. Compare to Sunless Citadel which was about 22 pages. 

This adventure takes place in the Doomvault. It is designed for 9th-level characters. By the end of the story, they are likely to advance to 11th level or perhaps higher ... if they don't end up dead in Thay.

CHARACTERS' GOALS

Over the course of the adventure, the characters try to accomplish the following tasks:

Explore the Doomvault and deal as much damage to the Thayans as possible.

Learn how to access the Phylactery Vault, and destroy the phylacteries within it.

The villains' goals are straightforward: defend the Doomvault and kill the intruders. Not all of the characters' potential foes share these goals, so the opportunity exists to turn enemies into allies, or at least useful tools.

Against the Giants

• 11th level to start. 
• It's THREE adventures tied into one. So maybe JUST DO ONE? 
• I think someone gave it weak reviews
• Lots and lots and lots of giants. All giants. Maybe not my thing.