I see a lot of misconceptions in this topic regarding paladins in Ravenloft. Here is what the source books have to say:
• Aura of Courage: Although the Ravenloft paladin remains immune to magical fear, she is not immune to "natural" Fear saves, which are the product of her own sense of survival. (In a sense, playing a PC immune to fear in a horror campaign is simply missing out on the point.) Instead, the paladin receives the Courage feat for free at 2nd level.
Paladins in Ravenloft can be scared or intimidated; they just are immune to things like Aura of Fear (like what bonebats and mummies have).
so on the server do paladins get some sort of mechanic bonus vs fear then? +2 i think it is if memory serves right?
They hold to the standard mechanical immunity to fear. i.e. there's no situation where paladin is subject to NWN's fear effect in the game; Though this doesn't mean immunity to natural fear, which is better suited for being RP'ed. Far as I can tell, they don't get any special bonuses to any rolls through the emote system.
Also, unlike in NWN, in standard DnD and Ravenloft, being under the effect of fear (or rather, being frightened or shaken) doesn't usually prompt one to mindlessly bump into walls. Typically your character would get frightened, which is -2 AB and saving throws. Running away in panic (fittingly, 'panicked' in game terms) usually requires another failed save when already shaken.
To note one thing though, that a monster has a Fear Aura doesn't mean it would
only possess magical fear effect. Natural fear rolls are also triggered by stuff like having a frightening appearance, being several size categories larger than the largest member in the party, being overpowering against the party in terms of combat ability, etc.