To amplify, Nikolai Nikolaievich 1 (son of Nicholas I) clearly didn't listen to paternal advice and turned out badly. However, His elder son, NN2, turned out very well. Peter N was rather lightweight and never did very much, but was someone for the quiet life and didn't cause problems.
Except, of course, that they and their wives introduced Rasputin to Nicholas and Alexandra, though again, to be fair, they realised their mistake later on.
Ann