bluerocker said:
Do you at least get rewarded more for your efforts? In P3, I dungeon crawled like crazy for a bit (currently in 5/13) and received little character development/story in return. Or is all the story in the Social Links?
One of the weak points of P3 that P4 addresses, each dungeon in P4 is about a specific person (usually a party member) that provides a look at the character and how they develop because of the crazy circumstances. Their S-Links after you complete their dungeon further explores the issues raised.
In P3, grinding up Tartarus doesn't really expand on the story at all outside the bits of documents you find as Dragoon mentioned, all of it happens during the full-moon missions, S-links and the various events that happen on some days. If the grinding is a little too much or annoying for you, I'd recommend playing the game on Beginner. Very little grinding outside of just working your way quickly up the tower is required, but you still need to pay attention to mechanics and your persona to beat the bosses.
bluerocker said:
According to a FAQ I read, those are important to get new Social Links and you REALLY need to pump them up to start out well.
Assuming you want to see all the stuff in one go, you'll need to follow a guide
to the day to level up your stats and S-links right. This can be a little tedious having to keep a guide open all the time and doing what it says, but if you're okay with missing some things, here's what you need stats for:
Fuuka's S-link needs max courage, it starts mid-june.
Yukari's S-link needs max charm, and it starts late july
Mitsuru's S-link needs max academics, and it starts early/mid november. That's all you really need the stats for.
Also keep in mind there is a NG+ which lets you keep all your persona's and your stats for the next run through, giving you more than enough time to max all your links the second go around.