I did NG+. So every quest and dungeon we did together, at least all the parts that NG+ allows. Multiseat mount. And then for sidequests/bluequests and so on, well, just hanging around and chatting, or solo as might be preferred on occasion.

I can't really say it wasn't enough.

Now, what does kill me on 'playing together' is the PVP side of the game. Where you just aren't allowed to have friends, at all.