Going to visit Vizak around Christmas. What to visit? Food Recommendations? What to watch out?

Hey There r/Visakhapatnam ! Me and My family are going to visit the city around Christmas. Then visit Tirupati. We are going to stay for 3-4 days in Vizag as a break from long train journey. What Should we Look forward towards? Are there any Fabulous Food Restaurants ? Any Good Shopping Items to take along ? Any Good tourist attractions to enjoy ? Any Tourist Traps to avoid? Please give your suggestions. Love from delhi.