Yeah, this one feels heavy on prod runs, I think it's 13 out of 40 of the rush quests, so that's about one out if every 3-4 quests. They're not a serious problem, I use supply rushes to blow through them ASAP, and stockpile rushes where I can specifically for events. I'd still rather pay big amounts of coins and supplies though simply because I have far more than I can use. I use Cider Mills (the base ones, not upgraded) for prod quests on the off chance I get a quest that makes the prods age based. If you're not worried about raw supply production, Beach Bars work decently well too.
I spam the decos too for happiness, roads really don't give enough in higher ages. For me, it's been about 3000 happiness per quest and in PE and CE that uses about 10 allotment gardens.
Gain population is another easy one. For that, I build then sell a military or goods producing building.