I've done the DTW-PHX route a few times for MRs, and don't believe I've ever not gotten an EUA (and believe that was as a Silver). But that's on the 7pm/EST out and 10pm/PST back. Very Elite light, very wheelchair heavy. But SchmutzigMSP would appear correct, I'd watch out for any west-bound plane leaving that early, for Elites trying to get in a full day (without taking the 7pm, and overnighting).

Steve B.