It's really wild to get a group of players that expect (consciously or not) that everything in the game world is there for them to defeat. So when the level 1 party is like "fuck it let's attack the dragon" and gets roasted they're like "wtf??". The DM is like "it's a gods damned dragon and you're two farmers and a guy with a lute. What did you expect?'

Hopefully the style and such gets sorted out before the game starts.