Join Date: Dec 2000
Location: Charleston, SC, USA
Programs: Avis Pref+, Hyatt Explorist, Marriott Life Gold, Honors Silver, IHG Plat via MC.
Posts: 6,789
One difference is that on awards to Mexico or the Caribbean, CO awards allow a stopover, while NW awards don't. Also, on transoceanic awards, which do allow a stopover, CO allows an open-jaw AND a stopover, while NW allows one OR the other.