I was surprised to be able to use two of my GGU about a week before our PDX-EWR flights earlier this month. (I had purchased a N fare, but my husband's ticket was on miles, so the kind agent canceled it and changed his ticket to cash in the correct bucket in order to apply the GGU for him as well. His ticket was about $100 more than mine, but I felt it was well worth it to travel together, marital bliss and all)