Arquen wrote...
So why wasn't it one of those new experiences he wanted to try after him and Anders merged. Maybe because it wasn't possible at all to inebriate a spirit?
When Justice inhabited Kristoff's corpse, he wanted to try new experiences. Once he merged with Anders, he was overwhelmed by Anders's hatred and frustration at being powerless while his people suffered. Justice is purpose-oriented. When he was at liberty, with not much of anything to focus on, he was all for trying out this whole biology thing, but now that he has a goal, he cannot allow himself to be distracted from it. So yeah, once Anders's mission is accomplished, I could see maybe a wild night of working their way through the drinks menu (like Death in Reaper Man, was it?), but that won't be until after the Chantry jenga. Also, Justice has Anders's memories of being drunk. He might decide that it's just not worth the hangover. Or at least that's my take on it.
As far as Justice's ability to neutralize alcohol, I know I said earlier that I could see it happening, but I'm no longer so certain that he could. Potions affect Anders the same way that they affect Hawke or any other companion. He has no special immunity to nature damage, so poison still affects him. Justice does have his own unique powers, but the ability to heal was never one of them. That was always pure Anders. Of course, it is possible that Anders himself can cure inebriation through some kind of Neutralize Poison ability, and that Justice would metaphorically tap Anders on the shoulder and say "This would be a good time to do that," but it would still be easier to stop him before it came to that.