I would doubt they will offer the job to you on the spot. If they decide to hire you, they will get back to you, and make an offer. Then is the time to question the package, if not already told to you. I would say 95% of the time, by now you will be told the details, without ever having to ask.
MP
+1 on this.
Get an offer. Then you can interview THEM. Ask your questions, and negotiate for what you WANT. More vacation. Whatever. Everything SHOULD be negotiable, unless it's a giant corporate position in which whoever is hiring you is a small gear in the overall machine.
Jabba