I would definitely demand room service.
I mean C'mon ... this is a big hotel.
Sheeeesh!

The granola bars were a smart move.
You've got some clothes.
You don't have any basic meds - a few would be handy.

The first place to find supplies would be the small room that most major hotels have near the lobby - the one that sells a few extra items for guests. Just necessities. You could probably buy extra granola bars and candy, more water, and some basic pills. The problem is that these hotels are usually hopelessly unresponsive when things go wrong. Meaning that the room you need may not be open, and the hotel manager may not open it in the morning. How aggressive are you willing to be ... wanna' try picking the lock on the door. It's not about stealing - you could leave $$ for items that you took. It's just about access.

Pete2