Section 30RS, or Reserve 30, is located down the right-field line in the highest level of seating. In the upper deck you'll find 20 rows of seating in Lower Reserve seating, followed by roughly 9 rows of Reserve seats. Row DD is the fourth row in the section.
This is one of the sunniest sections in the stadium during the late afternoon and evening, so you may want to bring some sunglasses.
According to the Dodgers ticket policy, children 3 years old and under do not require a ticket but must sit on the lap of an accompanying adult. So unfortunately, if your children are ages 4 and 6, you will need an additional ticket.