We have been in the grill twice and each time we were assigned to brittania and wanted princess, had our res switched to princess which is more intimate and service just a little better as princess grill is the original and the britania was added later. princess much more intimate and elegant. formal every evening except first and last and almost every man had a tux and women went all out. refinement and elegance are the norm in the grills. enjoy.
I would agree... you may be better off in the Caronia. You could, of course, book a Grill cabin and dine in the Caronia if you wished. The size and ambiance of the Caronia may be more suited to the kids... or vice versa.