If it is informal, then as others have said, you should be okay. I would actually encourage you to meet with these groups. For one, it would give you an idea of how you fit in with them in a more relaxed setting, and two it will let them know that you are really interested in them.
Going to lunch doesn't mean you have signed any type of exclusive agreement with them, so it shouldn't hurt your chances with other groups.
__________________
So I enter that I may grow in knowledge, wisdom and love.
So I depart that I may now better serve my fellow man, my country & God.
|