The seats are usually up pretty high. Last year we were just to the right of home plate (up at the very top of the stadium). This year we had a great view of home plate and the pitcher, and weren't up quite so high. We also had a great view of the Space Needle a little bit off in the distance (to the right of the Safeco Field sign).
The kids have a great time, but not because they're paying attention to the game. They seem to view it as a wonderful opportunity to eat junk food, find a trinket to buy at the gift shop, and goof off with their friends. It's a good thing the tickets are discounted because the food is insanely expensive - $5 for water, $7 for a hot dog. Anyway, here they are stuffing gum in their mouths.
In all honesty, I don't blame them for not paying much attention to the game this year. It was a pretty slow-moving game. Pitchers were taking forever between pitches, they changed the pitcher just about every inning, and not a whole lot was happening. We left after the 9th inning - they were tied 3-3 and had to go 12 innings before the Mariners lost by allowing another 3 runs. I saw a tweet later that mentioned how people complain about soccer being slow but the Sounders started after the Mariners and left with a 2-1 win before the Mariners were done.