What are you going to be visiting and taking photos of? Will it be during the day or will it be at night or indoors and dimly lit?
Assuming good lighting, or slow moving subjects that allow you to use a slower shutter speed, I have two idea for you.
First, 24mm is fairly wide. I had a series of zooms with my prior Nikon bodies before moving to Sony. So far I've been able to hold out with a 35mm and 50mm prime. I do find the 50mm too tight from time to time (ie I physically can't back up far enough to frame my subject), but that's rarely the case with the 35mm. Unless you're going to want to take an single photo of the entire contents of a fairly small room you should be fine. In most situations you'll be able to physically back up enough to frame your shot.
The second is that you can always take a multiple photos and stich them together when you get back with something like hugin. Just make sure you take very obvious "start of panorama" and "end of panorama" pictures so you know what photos were part of the panorama.
Unrelated to lenses, do you have a flash? Having one will enable you to do things like take photos of dimly lit people in front of a brighter backdrop. An easy example is a person/group of people with a sunset behind them, but you might find yourself in this situation if you're shooting in an area with a lot of foreground shadows.