and how well

You can stand, for free, for one inning at the viewpoint behind the park, looking back at homeplate.

There's a couple of windows that you can see. But, you're way in right field at field level. How well? Probably not very. But, you get what you pay for.

The have the port walk in RF. You can see, you are right behind the RF. For "just any game" you can stay as long as you like. But for stuff like the all star game its just 2 innings.

not really. there are no tall buildings close enough to get a really good view. most of the outfield faces the bay and the stadium goes up very high behind the plate and down the lines.