Join Date: May 1998
Location: Reno, NV (RNO)
Programs: AA LT Platinum, AS, UA Premier Silver, DL, HHonors Gold, Marriott LT Titanium, Hyatt, IHG Platinum
Posts: 4,723
There are things I am concerned about with CO's FF program, but Saturday night stays are not one of them.
General availability of award seats, particularly to Hawaii and Europe, is one. I believe the Consumer Reports Travel Letter, which did the excellent study of award seat availability, had CO at 5% of seats for travel to Hawaii, far lower than any other airline.
Another concern is the ridiculous rules regarding use of upgrade awards, where those things don't typically clear until 60 days before the flight. I guess the implication here is if you can't upgrade with miles when you buy your ticket, don't bother (or be prepared to ride in coach).
Finally, the extra miles (35K) required for doing a stopover on a domestic coach ticket. I can't even complain too much about this as UA doesn't permit stopovers at all.
I can live with the Saturday night stay given the off-peak coach awards from Sept-May at only 20K miles and the generous bonus promotions CO usually has.