1) Cat-2 balcony seats are at the rear of the house.
2) Yes, they will have to look over the rail.
3) Not sure how tall they are, so can't judge the interference factor.
4) But, you will have to sit sideways or crank your neck to see.
5) For each table, the benches and table do not face the stage.
NOTE: We have sat upstairs, ONCE. We would never do that again. Some people didn't mind, but I want to be comfortable when viewing the show and not have to sit awkwardly.