UNC Study Abroad Alumni: Help?

<p>So I am seriously considering studying abroad during Junior year,
either study abroad for whole Junior year or with the GLOBE program.
Could alumni please give me input on the impact of the trip on your friendship at UNC after returning? and is it impossible to hold club positions upon returning? will I feel left out after a year abroad?
I am really worried, because I have only studied summer abroad, but missing out academic year I feel like will distance me from my friends. Was it hard and will I feel left out of the social life at college when I return?
Also, if anyone have any alumni info on GLOBE program, please share them, I cannot seem to find any information by students.</p>