1)Do Abatis behave like heavy Intrenchments (Can only be charged, fire when adjacent, etc) or do they just provide the 2D6 benefit (When across the right hexside of course)?
Just the 2D6.
2)Does the MP penalty affect combat at all? Or just movement since when you charge you only have to have the MP to enter the adjacent hex?
Just affects movement.
Happy Holidays by the way!