Mood: The mood of the video seems to be romantic and playful, with a sense of excitement and joy. The theme appears to be related to love, relationships, and possibly marriage, given the title 'Shaadi Mein Zaroor Aana' which translates to 'Must Attend the Wedding'. The overall emotion conveyed is upbeat and lively.

Environment: The setting appears to be a train station or a platform, with train tracks visible. The presence of lights and a somewhat decorated background suggests that the video might be set during a festive or celebratory occasion, possibly a wedding or a romantic getaway.