Ok, primarily as a DM, but also as a player (I have a Cleric of Kelemvor character), I've become very curious about this because I'm in the position of doing a bit of planescape work with PCs.
The question is...
Assume you have a character, of one alignment who worships a deity of same (or similar) alignment, but the deity's home plane is greatly opposed in alignment to both the deity and the worshiper.
Where does the petitioner go upon death?
Does being a cleric of said deity change the answer?
I'll use my own character to demonstrate how the answer, given sufficient study of planeslore, could have a rather substantial impact on a character.
Take a Cleric of Kelemvor who is LG/LN. The god is LN. Yet Kelemvor rules over the Crystal Spire in the City of Judgement in.... the Grey Wastes. While preaching action->result and that all receive their proper fates, the condition of larvae upon the Grey Wastes, where all feel the incredibly oppressive force of despair inherent to the plane hardly seems a just or even desirable fate for Kelemvor's more goodly servants (especially his paladins?).
The question also arises for some other folk I DM for where character alignment is at great variance to deity alignment (most often where the character is NOT a cleric and thus need not be within 1 step of the deity's alignment).
Where do such characters end up, are each option possible and what determines the choice made? Who, precisely, (presumably under Kelemvor in the FRCS) makes this determination?
Forgive me if these are all answered in some easily available source, but I've had quite a level of difficulty finding the answer to them in web searches and what material I have available.
A god can simply decree that certain effects of the overall plane don't apply within his realm. One excellent example from the Grey Wastes is the Glitterhell, realm of Abbathor, dwarven god of greed. Full of gold and gems, it's actually quite colorful and beautiful, and the sight of it can lift the spirits of travelers who have been pressed by the Waste. (Surviving the actual realm, as well as the remainder of the trip out of the Waste, is an entirely separate affair.)
If Kelemvor holds to an interpretation of the Waste that doesn't involve crushing despair for all, he needn't make his petitioners suffer it.