So, if you are sitting down to watch a movie/ programme and you have your snacks ready, do you wait until it's actually started, everyone has got themselves sorted (if at home) or do you start eating at any time?
If at a cinema, do you start your popcorn in the trailers or wait for the main event?
This is just me thinking about this as dd who I hadn't discussed this with, said to me, "Eating snacks with the film is the best!" I tend to agree with her.
YABU - eat whenever you want
YANBU - eat when the main film/ programme starts