In section 303, there are 46 seats in row B. As you face the stage from this row, seat 1 will be on the right side and seat 46 will be on the left side.
The best seats in Level 300 are in in the first twelve rows (A-L) of Sections 302-304. These seats are fully covered by the roof and offer good sitelines to the stage.
Avoid rows M-Q in these sections if you're worried about rain.