What about carving up one bird, a section at a time while keeping the rest under refrigeration. Do you want one bird left whole for presentation? You can reheat the carved part to serve and keep the whole bird refrigerated. And carve the whole bird and reheat those portions as needed. If your friends are fast eaters, just warm it all up and watch them enjoy it! I'd carve both birds, put some dark and light meat onto each platter and warm a platter at a time. Keep a little broth handy in case you need it to remoisten.
Peggy