I find I get more annoyed by inexperienced leisure travelers than I do by road warriors/elites/frequent travelers. YMMV. I can definitely see how some of the more shamelessly arrogant behaviors grate, though they are rarer.
Hell to me is getting stuck while checking into a hotel behind the "why do I need to pay a deposit?!" kettle who swears this has never happened before. Oh dear God. That argument always goes in circles for 15 minutes, and I wonder when they last booked a hotel room that didn't take any deposit.