The view from Section 306 will be obstructed in a few different ways. First, this section is located behind the stage. So it is highly unlikely that you will be able to see the face of the performer at any time. For a high-energy show like Justin Bieber, this can be disappointing for many fans.
Second, the sightlines from this section will be at least partially blocked by lighting, sound and video equipment. Most notably, video screens are usually set up that would block your view of the stage. With tickets in unobstructed sections selling for similar prices, we recommend skipping section 306 and getting a view that is guaranteed to be unobstructed.