We've traveled with a little boy and noticed they didn't have a greeting for them normally. Just Princess for the little girls. And when I have on my crown, I am greeted with Queen, LOL
I've commented before that they don't use anything for boys on a regular basis. It's never bothered me though.
DGD likes being called Princess (even at 10). Though now I wonder, when do they tend to stop using that for the girls? When they reach adult size?