GEMS takes care of you, understands what your aspirations are, and tries to push you forward with your career. It's not just a summer program where you learn and record with an orchestra. This course could really change your career prospects. I recommend it to everyone.
I also recommend going in person so you can establish a friendly relationship with the faculty, they are the most generous people I've ever met.
I can't wait to find out where this summer program will take me. Definitely much farther than I could have hoped if I hadn't done it! So come to Spain!