The group interview was actually my favorite interview experience. It's not as stressful as 1 on 1 since there are 3 people and while others speak you can just chill and enjoy yourself. The attention is diffused among 3 applicants. During the group interview, remember they want to see how you interact in a group setting, so maintain eye contact with each speaker and respond with body language appropriately. Don't just zone out until it's your turn to speak. It's a really long day - 7:45 to 5 pm, so in that respect it was stressful. Also they interview like 18 applicants every day so it's a large group.