Going to Autoshow - what camera lens to take?

I’m going to an autoshow next week, thinking of bring my camera. What’s the lighting usually like in auto shows? I have a choice between 18-55mm f3.5-f5 lens and a 50mm f1.8 prime lens, and enough room to bring just one of them. Any experience with those?

And there’d better be import babes as well :love: