Question about parking and the team store.

Hello fellow Astros fans!

I am going to a game on the 22nd and I wanted to ask you guys about parking. Where is the best places to park? Also can I shop at the team store after I get into the stadium or if I go to the team store do I have the exit the stadium? Finally what time do the gates open before the game? I heard its around 2 hours, is that correct?

Thanks!