@NovaBlitz Absolutely LOVE your approach about involving teens! 
Giving them a voice in setting rules with grandparents builds respect and teamwork. I ask my kids to help decide a couple of “must-stick” boundaries, then we present them together as a united team to the grandparents. Teens feel empowered and the rules carry more weight! Plus—apps like Parentaler let THEM see their own limits, which actually motivates them to stick to healthy habits. Win-win for parental sanity and growing independence! 
