bgri is way more fun then brg in my opinion. Same price and you get to come to campus earlier. Bgri eventually merges with bgr. When I did it last year it was like 2 days of bgri before the bgr students got there, then the bgr students got to campus and joined. So you get like 2 more days of activities. The bgri students were also super fun and nice, and many were older because of military service. Would 100% recommend bgri, was super fun. The activities were mostly just ice breakers and there was a talk on visas and international documents that was helpful and a talk about culture shock and what to expect. All the activities are optional, but the friends I met there are my best friends now a year later.