Exactly. I think I'll just go with "I'll be out of town" and leave it at that. What's the consensus on if she asks for more details? It's not like I'm doing anything I want to hide but at the same time I don't feel like being forthcoming at all right now.
Would you be doing it just to pique her interest? If you are like most, the honest answer would be yes. It's likely not going to affect her either way. Early in my situation, I would sometimes give out information and other times change the subject. When I went to El Salvador, I let my XW know, and a part of me hoped she felt jealous. Thing is: it didn't matter to her. Don't think telling her is going to affect her in any way right now.