Internships are critical for employment. They give you a chance to find out what you want to do. They are an avenue in if it is what you want to do. And, they can develop your skills. If you want to be bilingual and are interested in business, complement your French major with economics, math, etc.
Study abroad is essential.
Going abroad is definitely worth the real-life experience. I stayed with in France. If you are thinking about graduate school, there are graduate programs in the field of French as well as other professional degree programs. My first career was in teaching. I love teaching and it remains a part of everything I've done.