Went to my cousin's place today where we unlocked all stages/characters on his savefile, completed all co-op events, played some Smash Tour and goofed around with 2v2 online team battles VS anyone.
Smash Tour is a lot more fun than I expected at first. It's really like Mario Party, but more in the sense that you're constantly trying to screw each other over with items, boobytraps and by snatching that character from the board he wants so badly. It's going to be amazing with 4 actual human players.
And the 2vs2 online really took me back to the good days of Mario Strikers Charged online multiplayer. It's not so much about winning as it is about picking characters to fit a theme (and play like total idiots, yin-yang Samus duo rocket spam go!). Haven't laughed so much playing a game for a looong time, so far this game has delivered in spades for me.