As others have said, the obstructed view seats at the Academy are, by and large, extremely obstructed. It is worth spending the extra money if you can to get a full-view seat. Personally, the only places I would sit would be within the first 20 or so rows of the parquet or the first ring of parquet boxes.
"You travel alone because other people are only there to remind you how much that hook hurts that we all bit down on. Wait for that one day we can bite free and get back out there in space where we belong, sail back over water, over skies, into space, the hook finally out of our mouths and we wander back out there in space spawning to other planets never to return hurrah to earth and we'll look back and can't even see these lives here anymore. Only the taste of blood to remind us we ever existed. The earth is small. We're gone. We're dead. We're safe."
-John Guare, Landscape of the Body