Funny, I was just about to post here asking you all a question around this. I am flying on Thursday and am a usual DL flyer. But client purchased M-class fare and upgrade from GVA to US is 20k miles and $300 if there's space. EF shows J1 right now, so it may not happen, but wanted to try it out. The offer was open yesterday, but today the 'waitlist' option is gone. Should I just call? (PS: I'm only a Silver)