I have just got back from KotN4. Here is basically how it went.
I got there an hour early so I could play some friendlies. After friendlies top 64 had started and I played against a

player called Mito. I went Robin game 1. I got kinda rekt game 1. I switched to

game 2 and I was close to bringing it back. Until I SD'd

.
After that I played my losers match against a Pikachu player called OJOE. Game 1 I played Shulk and I lost. Game 2 I switched to Marth and lost that as well. And that was it.(Maybe I need more Pikachu experience) Overall I did pretty well by making it out of pools. After that I just played friendlies.
Sadly I didn't make it on stream or any of the first few rounds of top 64.
I'm pretty glad of how I did and I defiantly want to attend tournaments again.