Hi Hans,
I brought chocolates (Belgian, knew they would be enjoyed) for dad and perfume (Dior) for mom, I think it was appreciated although gifts were not opened in my presence. You can always ask your lady. At the end of my stay, I received a gift for my mom in return and while I was there, they would not let me pay for any restaurants. They were quite wealthy compared to the average.
Hugging is a definite no no, polite shake hands, smile is appropriate. My ex parents didn't even hug their daughter really although they hadn't seen each other in 2 years.