We are very lucky to have Camp Cobbossee, our brother camp, located less than 1/2 mile away from us on the same lake. We get together for one shared all-camp special event (like Carnival!), and schedule a social or community-service based event for the oldest campers.
For girls with a brother or cousin at Camp Cobbossee, they will see him at least once a week, either at one of our shared special events or at a special brother/sister lunch. We also coordinate all of the travel to and from camp with the same timing and locations to make the logistics of getting to camp as easy as possible.