FlyerTalk Evangelist
Join Date: Aug 2011
Location: Barcelona, London, on a plane
Programs: BA Silver, TK E+, AA PP, Hyatt Globalist, Marriott LT Plat, Hilton Diamond
Posts: 13,031
You certainly wouldn't be able to UUA during the purchase process. But once your ticket is booked, you can easily call and UUA. No restrictions there AFAIK