Can buy tickets at Stadium

Yes

Yes online is better

Yes. There's a ticket window at the stadium.

Yes, box office or guys on street

Yes you can

Always

Of course

Yes ,see above comments

I say no

Yes and its easy to do. No hassle what so ever.

Yes,at the stadium or ML B app

Yes. Plenty of excellent seats available All different price ranges The Ticket Window is right across from Ballpark Village. North Side of Busch Stadium Go Cardinals