Hey! I went to the Mayo Clinic when I was newly dx. I was transported hospital to hospital and stayed at the St. Mary's Hospital for three days. I didn't have a good or bad experience there. I was also out of network with my insurance, which I do NOT advice for going to Mayo. We're still paying it off and that was a year ago!
Anyways, all they told me was that I indeed had Crohn's. Which I already knew, but hearing it from the "Mayo doctors" made me feel a bit better, lol. They also were able to stream line my medications a bit and told me that everything my doctors were doing back home weren't too far off the mark, and just to watch how the flare went.
I also have the constipation Crohn's, and I was getting a lot of obstructions. I finally had surgery and I think I have been in remission since, but I didn't have surgery through Mayo, and they didn't seem to help much in any other area; ie nutrition.
I hope this helps! Oh; and I had Dr. Pardi, he was nice and made sure I got to the right doctors in my home state.