No experience with CP. my transplant was at Clarion in Indianapolis. I went through the eval process twice as my brother's insurance changed after the first eval and Clarion wanted us to repeat it. I would have thought it would be the same process but Clarion actually conducted more tests and I though they were more thorough than the original (Henry Ford) in Mich. The transplant team treated me more like part of the process and less like the holder of a spare kidney. So, it can differ between teams.
Nutrition advice was just basic common sense things, especially after the surgery: avoid things that cause gas, eat prunes, drink lots of liquids. Also, avoid some types pf painkillers like ibuprofen and aspirin. Bring a pillow to the hospital to hold over the incision on the way home, don't drive for three weeks, don't lift more than a gallon of milk for six weeks....
Follow up was ok with tests every so many months for the first two years to measure my creatin. Have not heard anything for the last two.
Hope that helps.
Good luck - very generous thing that you are doing.