There was no bug standing with the quest-line or the area. It works as intended. I believe that players who are partaking in these quests are trying to drill in the incorrect rooms. There are two rooms that are intended to be drilled.
Done the marriage quest a total of (I believe) 7 times in this server and 2 times on the original game. There was something wacky about the drilling areas, that neither would have anydrilling spots. There's a difference between the monster areas and the drilling areas where the drilling areas just straight up tell you you can't drill there, whereas the drill-designated areas were just telling me nothing was found there for half an hour straight. Was not drilling in the wrong area lol
Could it be dependent on time, perhaps? I keep trying, both AFK drilling and manual drilling sessions, with no avail.
EDIT: Just trying it now and it's finally working?? 11 PM server time allows it. Don't know why it wasn't working last patch at this time?
Edit2: Thank you for another good patch! Sorry, forgot to mention. It's 2am here. I should not be awake.