Date night?

Soooooooo my SO asked me to go see Avengers tomorrow night. I assume that’s all we’re doing. The first showing is at 7 but he’s picking me up around 4 or so. I’m not sure what we’re going to do for three hours?!?! I mean I guess dinner is involved but I don’t think that will take a whole three hours. What the heck could we be doing?!? He’s my first for everything and we haven’t held hands or kissed or hugged so thinking about what we could be doing for three hours makes me nervous when I thought all we’d do is dinner and a movie? Any advice? Each date I seem to get more excited and nervous!