Originally Posted by
NoDestinations
Did you guys clear in advance or at check in?
If I have booked a Shabbat flight, I usually clear by the 96 hour window. TUE/WED flights have cleared as late as at boarding. I can't remember missing a TLV upgrade on TUE/WED/SAT or late FRI.
OP, when you are searching in "Expert" mode, try to make sure there is a lot of Z/P/PN space if R=0. This will increase your chances of the UG coming through.