Hi, Dwight, no idea what sb is?
The way it works is you buy from your wife's airline to fly as other airline (OAL) standby. The OAL must have agreement with wife's. Each airline contract might differ--rules of travel, pricing levels, etc. You would be buying a zed priced by zones and levels. There is a really good article here:
http://nonrev.net/content/119-what-zed-fare.html
it's excellent--more than you'll ever want to know!!
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