The first couple seats in row 1 are "obstructed" Possibly only the first is sold that way. Since the post is right next to the seat there isn't much obstruction. Leaning back you might not have a clear view of the plate, and the depths of the leftfield corner can't be seen from there.(or from most places on the 3rd base side. Since Fenway is small, you'll be much closer than a box seat in many other parks.
Nice seat!
It might be a nuisance if you go for beer or food often.
If you're not wearing some other teams apparel (Especially NY!) be sure to give the people in the last row of loge box seats some good natured kidding about paying $44 more to sit a couple feet closer.
If you are wearing another teams apparel, Just be quiet and polite and I'm sure everything will be fine.
Actually Fenway is a lot friendlier for visiting fans. High ticket and beer prices and ejecting the really objectionable people has made it a great place for everyone. Part of me misses the old days, but some people today take it way too far and have ruined the heckling for the rest of us. One of the best baseball discussions I've had was with a Yankee fan who had a sense of humor. There was the usual "Yankees suck" stuff from others, and the usual reply of "X world series wins" When I replied that many of those came from a team that was built on Red Sox players the real fun began. And I do mean fun. I don't think eiter team- or baseball- would be what it is without the other. (New York held the mortgage on Fenway, so that's a good starting point)
Steve B