Hi Beth,

For NINJA, by the time we decided to book the options were either a specific cabin assignment in category D or C( can't remember) or an H guaranty( pay lowest price and wait for cabin assignment as described by Olivia). We opted for H guaranty since it would have been price prohibitive for us to book the other available categories.

Right around the time for final payment we were informed that they had assigned a category H cabin to us. I was a little disappointed since I was hoping for an upgrade. BUT, considering I might have been "upgraded" to a cabin in the back of Navigator( with all the vibration) I consider myself lucky.
So, it seems the guaranty sometimes works in your favor ( you're upgraded) and sometimes you get what you pay for.