First thing is that traveling is a benefit. If you can not travel within your time frame then just buy a ticket and put your concerns to rest. We all do it from time to time.flyer63 said:One serious downside I see to fcfs is you can't make a last minute decision on flights because of the requirement if you want to have a chance to get on. To list 24 hours prior. In coming back from FL over busy spring break, we ended up switching at last minute and flying to providence instead of boston. At US you can maintain your position even with a last minute listing. At AA you wouldn't make out well.