Originally Posted by love_to_travel

Whoops sorry for not being clear, I'm flying to GVA this week. I only mentioned Christmas because I used almost all my miles to book first class flights for my entire family during that time, so I only have enough to upgrade either IAD-GVA or GVA-EWR.

Looks like I'll try to upgrade IAD-GVA, can I do this at the gate at IAD or should I do it at the United Club in HNL or DEN?