Clueless Kiwi

Hello, I’m from New Zealand and heading to the astros game on 9th sept. I’ve never watched baseball before and have no clue what to expect. I will be in Houston for a few days solo before meeting with friends and thought I would entertain myself by going to the game.

1. I’m nervous as hell to be going alone.
2. How long does a game go for?
3. Is it worth doing the stadium tour before the game? I feel like if I do that I’m going to be spending all day/evening at the stadium and I don’t know how I feel about that

Any help and advice much appreciated as I have no clue what to expect 😅