Yeah - the most annoying thing in the world is when people don't simply ask for advice if they don't know the fight/dungeon.

Example, queued up for high level DR a few days ago and got HM Copperbell. Copperbell is a really easy dungeon and everyone was appropriately geared, but I always ask before we start moving if anyone is new. No one said a word. Nothing. Not even a "Nah, I've done it before." or anything like that. I'm a bit confused why all 3 other people don't want to talk, but I figured I could gauge their knowledge from the trash pulls up to the first boss. They seemed fine, but I realized that everything was pretty straight forward as far as dungeon mechanics go so it was hard to tell if they had actually been there before. Then we got to the first boss which is pretty much a check of "have you done the dungeon before" (it's pretty obvious what to do, but usually the first time you don't realize it until you're dead). So I ask them "Does anyone need this boss explained?" and again I'm met with complete silence. I pull, first bomb goes off, we wipe. I explain we need to kill the bomb, we do, we don't wipe. The bard in the group knew what to do for the 2nd boss so we managed to beat that one, but not without the Dragoon running in front of me multiple times and needing to be raised multiple times. Also, again, nobody said aaaaanything. 3rd boss, Bard fed the worm, DRG built up stun resist on the boss so I couldn't actually stun his big attacks, but we made it through. Also the DRG earned the mapping achievement.

I reaaaally don't think this is okay. There's no shame in being new, I guess everyone has the fear that if they admit they're new they'll get vote kicked, but I'd rather run that risk and know what I'm doing than not ask and cause multiple wipes.