Alex's Caves added a brand new biome, the Candy Cavity and I wanted to taste it all! (that sounded weird, but i'm keeping it because it's a play on words and I have faith you will not interpret that in any other way than was initially intended.)
Anyways, I hope you enjoy it :)
Here's the link if you want to try it yourself:
https://modrinth.com/mod/alexs-caves/versions
I won't be posting the schematic for the castle for members since the design was based on Sharks; the link to which was taken down, but if it comes back up I will at least link that one here for you to check out for yourselves :)