So, to increase the overall happiness of the fort, I've started training some engravers and getting the fort smoothed out and engraved. I started by letting them practice on the nobles' offices, which were already at the minimum requirements but still let them smoothe and engrave them. My mayor now has an "opulent throne room", "opulent dining room" and a "great bedroom". My Captain of the Guard now has a "royal throne room", "royal dining room" and an "opulent bedroom". I also dug out some pampering rooms in case of unhappiness and started letting them practice their engraving skills on these rooms. I also gave my metalcrafters some excercise by ordering 30 gold statues to be made, which will soon be put all over the fortress' frequented areas. Finally, I started digging out 200 bedrooms for each dwarf in my fortress, even though I am just at 84 dwarves, to train my newly-minted miners a bit
Now, I am choosing between two things.
I can now start engraving my dining room, or engrave the bedrooms. I want to know which gives better results in happiness increase, so that I can do the other option first to train the engravers even more, and once that's done, do the first option. So if engraving the whole dining room would give a higher happiness boost to the dwarves than engraving the bedrooms, I would engrave the bedrooms first, and when they're done, engrave the dining room. This ensures that the effectiveness of the happiness boost is maximized.
I know that owning and sleeping in a bedroom gives a much higher boost than eating in a dining room of the same quality, but since my dining room is already of a much higher quality, I want to know which one gives a better hapiness boost.
My bedrooms are all 3x3, intented to get cabinets as well, and not yet smoothed. My dining room is approximately 30x30 and not yet smoothed, but it has many tables and chairs and is also lined with gold statues. Which of these two gives a higher happiness boost to dwarves eating in it/sleeping in it when the engraving is done?