What should i do at this dance?

My friend is taking me to her sadies, (we go to different schools) and she is got me a date. I think this kid is a good looking kid, and i don't know how i should greet him, this will be the first time we have ever met, so i don't know if i should hug him, just wave, or what. We will obviosly be dancing at the sadies and you know how high dancing is (grinding haha). And at the end of the night should i give him a little kiss on the cheek sort of as a thank you? we are also both just freshmen in high school