This coming June I will be travelling to Boston and returning from Las Vegas to Manchester after a multi centre trip with my family in Upper Class. The wife's parents will be coming with us but in Premium Economy. Will the inlaws be allowed in the clubhouse at Heathrow and the shared lounge in Las Vegas? Would we all be allowed to check in together at the Upper Class desk?We will be flying with Virgin America on the internal flights. Do any of our Upper Class privileges extend to the economy Virgin America flights? 
