I run a few servers that are basically adventure courses where players solve puzzles, navigate mazes, fight mobs, do parkour, find hidden gear and eventually find the final level in a linear adventure course.
While the games are often open for all ages I'd like to open it some days for adults only for building, play testing or for groups that wish to simply play the game. Streamers and youtubers are welcome as well, we'll just have to discuss a time and day to get you in.
There is a surprisingly large community of adult builders on minecraft who are absolutely amazing. Even if what I build isn't your thing I can probably help you meet some new people and maybe fall in with a group that better suits your style.
For those not there yet, check out the Minecraft Servers club on Xbox One.
Here is a couple of videos of my servers to give you a better idea of what it is my team and I do.
Message me on Xbox Live as DreamerMMA for an invite.