I am a senior physics major and I recently applied to a national lab that is associated with my university. I applied for a student research position through their website (uploaded my resume and wrote a cover letter etc.) I was contacted by the PI of the research team to come for a 'visit' for an hour with him and his team. He went through the hassle of giving out the visitor pass for me.
More about me, I am a senior but I have no research experience. I don't have a strong GPA and I admit I am not that 'smart' like other students. Should I have to explain about my GPA?
So my question is what should I prepare myself prior to my visit? Do you think it would be some sort of an interview? What sort of questions (academical/personal) should I prepare? Also, should I take an updated resume (I don't think it has really changed since I applied)?