I didn't watch the trailer (I scrolled through just to see a few images), I didn't read any reviews, I tried my best to go in as blind as possible, that's really the only way to do it IMO.
I'm actually kinda nuts about it. When I saw No Country For Old Men in the theatre, I ran out when the CMBB trailer came on. I like my first impression to be of the whole thing, not battling whatever idea of the thing I've built in my head.
Even having seen the film, I've only read a handful of reviews and interviews. I want to see it a few more times to solidify my feelings on it. You have the rest of your life to look into the critical assessment of a film, you only have one opportunity to approach it apart from all that static. It's a special time right now.
Also, this is only tangentially film-related, but lately, I feel as if I'm drowning in a sea of opinions that I'm not even consciously seeking out. Every time I go online, or talk with people, its just this endless, borderline mindless, rattling off of opinions, and I think its become kind of unhealthy. It becomes harder and harder to approach art or politics or even facts themselves when there is such a strong compulsion to see how everyone else feels about shit while I'm still formulating my own feelings. When I like something, why should I give any kind of fuck if someone else doesn't, or why they don't? If I tell someone I liked something, and then they tell me, unprompted, "Oh, I hated that thing", how does that add to my life in any kind of way? I dunno. I'm not suggesting that criticism or discussing opinions are inherently bad things, just that I feel totally overwhelmed right now. I might try a thing where I don't offer an opinion unless asked, and don't actively seek any out unless I really, consciously feel like it will enrich my life in some way. At the moment its just a bunch of fucking noise.