I looked around and couldn't find anything that really answered my question, so please feel free to redirect.

I am looking to book a round trip in First or Business to New Zealand for me an my wife next year using miles, but I am not clear on the major difference between Super Saver vs. Standard awards. Is there any difference I need to be aware of other than just the fact that super saver is typically limited inventory and has crappy routing?

Would just hate to book, without knowing if Super Saver could experience a downgrade or something else funky that they don't make clear in the description.

Any thoughts would be greatly appreciated. Just trying to err on the side of caution when booking this trip and am a firm believer that things that seem too good to be true, typically are.

Also, if I do take a crappy routing (like through NRT) is it possible to have a couple of days stayover en route to Auckland, NZ?