Played last night with my girlfriend and her siblings. Had a great time. We had some confusion with how spellcasting/spell slots work but we made it work! I like the setting quite a bit.
The adventure I planned for them was about visiting "The Isle of Thana," a burial spot. Deep underground, the party was able to see through the veil and speak to those long passed (family members, etc). Along with the adventure to get there, it was all a great time!
Can't wait to see how this project develops further!