Great entry! Tying the pregens right into the module feels very novel to me. It took me a few passes to really understand how much the pregens are tied into the challenges being faced. Do I understand correctly that the party starts with no torches or weaponry other than what's listed in their statblocks? And the large numbers of Jade Tears in rooms A3-5 are meant to keep the party trapped until they lift the curse?
In any case, I love the entry into this adventure. What a great way to kick things off! The conclusion is great too. Everything fits the theme and the title you were assigned really nicely.
How do the Houri's abilities interact with the Jade Tears, beetles, and the crayfish gargant? Can they be seduced? Sleepkissed?