The challenges and monsters are delightfully weird, the flow through the dungeon seems quite interesting, and some of the items and encounters actually made me chuckle.
If there’s one thing I’d nitpick is that it would’ve been nice to have more encounters that make it explicit that the throne is cursed before you get to the throne room. There are many interesting side-characters that could lead to fun interaction there, but I feel like I don’t know how I’d set that scene up in a way that the PCs wouldn’t resort to violence right away as they figure out what is happening. Maybe I would run it as if the party just barged into a dinner and got invited to it.