I got a job in an ALF while in school and still work there casual, not as a registered/licensed staff member. When I am passing out meds, or the other UCP's (unregulated health care providers - thats what we call it here) we do not do it under someone else's licence. A UCP makes a mistake, the UCP tells the nurse, fill's out the paper work, and takes actions to correct it with direction form the nurse. The nurse is only responsible for her actions.
I'd say go for it. I really like where I work. It will be good experience and hopefully not too much stress. A great place while you are in school.
Show you love working with geriatrics and get across how much respect you have for the population and that you feel it is an area where you can make a difference.
I'm a new grad and have had two interview in LTC they asked my about why I want to work in geriatrics, why their facility specifically, what is a work related challenge, what do I enjoy. They probably will ask about why you want to work nights. (is it cuz you have kids and want to be home during the day, or you are just a night owl, or can't find an other job and as soon as you do you will be gone)
I really do enjoy it, it is busy but in a different way then a hospital.
Do they know you are getting you masters? If they don't I might not tell them, dont lie but........it tells them you wont be there for long, might call in if you have an exam the next morning, that your hearts not in that specific area. An ALF has no need for a NP.
Good luck on your interview!