Suggest you want a busy/difficult airfield for FIC if at all possible
It is hopeless advice like this that gives PPRuNe a bad name.
The exact opposite is in fact the reality of the situation here - why on earth you would want ATC butting in every five seconds when you are trying to master FI patter is beyond me. When faced with that situation as the jobbing instructor then it's never an issue, you just shut up and listen... but whilst training for the FI rating? I could think of nothing more that would adversely affect your progress as a budding teacher. The only noise (other than the engine) you want in your earhole is constructive criticism from your FIC instructor.
VFE.