It comes down to available housing, parents and money.
Can't see a school system allowing 200+ individuals to stay in their gym for 1-2 days this Summer, not to mention 3-4 weeks in the late Spring
Can't see parents allowing their children to get on a bus and ride around the country for weeks on end.
Can't see corps organizations having the funds to do go on the road without housing or members or.......bingo. Wouldn't be surprised for BD or SCV to make the call to do what's right for their corps and then DCI to follow