I DONT GET THE POINT OF THE SMS PART OF THIS DEVICE AT ALL.

Two scenarios:

1. A person is drinking by himself and is considering where to go. An SMS beeps in: "Party at the room!" - To invite them?

2. A person is avoiding partying and wants to work on something in peace and quiet in the room. The same SMS beeps in. - To warn them?

So depends on the situation really.

Although...
I guess it helps to know that the room is located in the building in this town that has the most nightclubs though. It is seriously in many ways EXACTLY like a mall except instead of stores and restaurants there are just nightclubs. So chances are the people who own the room might be in the building partying somewhere before getting notified that there's also a party going on in the restricted area that they're the owners of??