Clean up, dress traditionally, get there extra early so you have time to familiarize yourself with the location and decompress (breathing, stretching in the parking lot, etc.), and get into the building early to wait ~10-15 minutes before your interview is set to start. Do not bad mouth ANYTHING, be optimistic and portray yourself as an obedient worker but a free thinker. Make sure you drink lots of water the day before and eat before you go, try not to overcaffeinate. You can message me if you need hyping up or more information :>