Is it appropriate to ask departments when admitted students day/weekend is?

[peachy4345]

Hello! It seems like some programs just invite you to come when you can, while others have more of a recruitment weekend for all admitted students. I am trying to plan personal travel for this spring, but I'm a little worried that I might accidentally schedule something that would conflict with an accepted students weekend. As far as I can see, none of the programs I applied to (PhD in art history) state when their accepted day/weekend is.

Does anyone have advice on this? I don't want to call and seem presumptuous (as if I expect to be admitted). But I also wouldn't want to miss out on a weekend because I already had something booked. When applying to MA programs several years ago, this very thing happened to me--the program sent out invitations for a big weekend with only two weeks notice and I couldn't attend because of a conflict. 

Thanks for your help!