Was at a Science Museum this afternoon bored as feck, been there done that and was on the gift shop gritting my teeth and managing expectations when I observed a little tableau of another family's life and was pleasantly surprised to be able to knot my Judgy control pants
.
A little girl pestered Mom for a completely inappropriate toy, Darling Ranunculus was probably 35 months. Mom immediately agreed and went to buy the meccano jeep. 
Mom and happy child then proceeded to buy tickets for the museum.
AIBU to think all the seasoned parents know to visit the gift shop after the museum purely for purposes of behaviour management and persuasion?
Should I have given her the beenifts of my copious parenting experience? Aka been a meddling middle aged Harridan?