Surely details like vacation time don't need to be asked, that information should have been supplied as part of either the job description or at the interview? Although that's really a U.S specific view, as most other countries have statutory holiday entitlement that applies to everyone. Yes, it's true, the U.S.A. lags sadly behind on the vacation time front.
I'd ask for a job description if one is available, that's always useful.
Keep Up with TechRepublic