I'm a C&A psychiatrist and I actually agree with the program that doesn't offer the peds rotation option. I did a peds rotation and it was by far the toughest rotation of my intern year. Maybe the rules have changed since then due to work hours, but I don't think I ever slept on call, and I did it mid-year, in time to be sick for most of the rotation and miles behind all of the peds interns I worked with. I was only one in my class who did the rotation and they didn't have a system for how to treat psych interns- FP interns got a half-sized patient load in recognition that they weren't familiar with that particular hospital and had spent the rest of the intern year doing other things, but I was treated like a seasoned peds intern. Intern year is tough enough and you don't need to add more variety (and stress) to it. Most programs will let you do some child psych as an elective, mine even did it in 2nd year, and that was vastly more useful in deciding whether I wanted to go into fellowship. And even if your program lets you do inpatient peds instead of inpatient medicine, I thought medicine rotations were easier.