The published time for EXP upgrades is 100 hours before ETD. At this point neither one has cleared, my outgoing shows 2/16 and the return shows 7/16 F seats open for assignment. With an EXP on the waitlist I assume they won't releasing upgrades at the Plat/Gold windows, so wondering when more seats will be released? At T-24 checkin, or at the gate? Also wondering how priority is determined within the EXP group. Fare basis, # of miles flown or date added to list?