I would like to sign up my daughter and her two sons for this trip but I understand there must be 2 adults if there are 2 children (of the appropriate ages). This is fine as long as accommodations are suitable for the 2 adults. In other words, these 2 adults will not share the same bed! My daughter and her female friend would like to go, but accommodations must be appropriate. How is Road Scholar responding to this situation (which, by the way, is increasingly familiar)?