Also, on the same kind of note - first time i did ifrit, went onto a group on pf, went into instance, two people outright said nope this isn't on and left.
I explained to the party lead i didn't have my kill, but purely because i hadnt actually tried, and was sure i could do it. He was fine with that and let me stay while we rebuilt the party.
Who then went on to one shot it xD