They are a travel agency with a network of specialist across the country who can advise and book as well. - Air, Car, Hotel, plus all the extras
I myself have been none too pleased with them with my Saks WE MA. They do the basic for me and all I ask for is an air booking for a whopping $35 per booking. Nothing more nothing less.
I think they have a dedicated team call center for World Elite MasterCard clients.
See the other thread on this benefit with Premier Pass and continue the discussion there.