Maybe they flew some of Michelle Antoinette's friends in from Chicago so she would have someone to talk to (other than her daughters Natasha and Malaria).
She does have lots of friends, though, case in point is her Grand European Excursion to Spain in which she brought, supposedly, 40 of her "closest friends", and the royal entourage occupied something like 70 rooms in the best hotels.
I guess you missed the point that the kids are going to DC with Barak. Only Moochie and whoever she flies in to “prepare” for her birthday will be staying behind. Two week Girls Gone Wild, taxpayer funded, version.