Is staying at the Hotel worth the cost, as opposed to "commuting" everyday?
I think it's worth the cost for sure! Being able to just wander back to your hotel room and sleep is alot funner then driving every night. Plus, alot of fun stuff happens in the rooms if you go with friends like I do. We watch movies and eat junk food, lulz. xD It can sometimes be chaotic staying in the room though, especially when your checking out, so keep that in mind.
Were you happy with your room experience? (or did the bed/nightlight/neighbors keep you up all night?)
Yes. :3 Granted, we had five people in a room, but the one we got was big with nice beds, a large window, and a beautiful view. The Television was nice, and the bathroom was pretty as well!
What percentage of people go full cosplay?
In my opinion, the majority of people that attend are in cosplay. The first year I went, I didn't cosplay, and I can honestly say I had much more fun the time I did. As far as percentage, I say close to 3/5 are in cosplay. :3
What would you wear that wasn't cosplay, yet still feel "incrowd"?
Anything you wear is fine really. As far as 'incrowd' goes, I'm not sure. Anytime you have a camera though and wanna take pictures, people will be happy, like Nikki said. ;DDD
Do you feel like there's too much activity/shopping/stuff for the number of days?
It depends on what you're interested in doing. o.o Most of the panels at Kumo get crowded really fast, and aren't really worth it. Things like the dances, Choreography, and Karaoke contest are the really fun things that I go to. And don't worry, you don't have to attend everything. o.e
or is it relatively easy to find "down time" if your feet are sore?
Of course. There are so many places nearby to relax, like the parks, fastfood, restaurants, and so on. :3 You can even hang out in the lobby, but that's usually super crowdeddd.
What days would you say the best stuff happens?
It depends... When I went to Kumoricon '08, me and my friends were there from the first day to the third, but when I went this year, we stayed from pre-reg to the third day. I like pre-reg day the best for hanging out, and the second day for fun activities~
What, in your opinion, is "the best stuff" at K-con?
Karaoke room, omg, so fun~ Choreography contest, I usually compete. x3 Cosplay contest, the skits are hilarious. Dealers hall, really crowded and hard to get to, but it has nice stuff. And walking aroud for photoshoots is fun too if you cosplay!
Disclaimer: These views come from a fourteen year old girl, keep that in mind. xDD