That depends largely on the show. For Follies at the Marquis, only the very extremes (as in last few seats on either side) didn't have a full view of the stage, in my experience. This was largely irrelevant as you missed little to no action. For Evita, it's all going to depend on the set and also how it's staged (ie. how much will you miss in the corners and how important will that be). There's no real way to know how it's all going to pan out until previews start and someone can report back.
Scratch and claw for every day you're worth!
Make them drag you screaming from life, keep dreaming
You'll live forever here on earth.