I am a BOTH kinda guy.
When I walk in, I am leaving my general reality behind for the day. It doesn't mean that I only think about Disney when I'm there, but I do my best to keep my mind off of everything that might bother me, weigh on me, etc. I'm not going to bring a bad mood to the park or anything. If I did, what would be the point of going to DL?
But I certainly turn on my brain when I'm in the park so I can properly enjoy it. I don't just want to coast through the day and relax. If I wanted that, I should be at the beach.