The food and beer hawkers are frigging annoying, they have a great ability to stand in your line of vision at crucial points of the game.
It's not innings 1-5 that are the most interesting, it's the last 4, especially in a tight game when the opening pitcher gets tired or sussed out and the coach has to go to the bull pen, then when does he select his 'closer'.
Find out about the pitchers and what they are expected to do, it's a bit like when and in what situations does a cricket captain bowl a particular bowler, but remember, unlike cricket the pitcher rarely goes to a fielding position and once they've been substituted they can't come back on, so once they have been used, that's it.