Battery dead, doors locked in Dallas

I reluctantly let valet park my '05 when I arrived at my hotel in Dallas on Fri. When I checked out yesterday, they said there was a problem with my FOB and the doors wouldn't unlock. We tried my other FOB, no luck. The battery is dead! My key is at home 200mi away and the dealers are closed. The hotel calls my roadside assistance and they want me to sign a 'Damage Releetase Waiver' so that they can 'manually manipulate' the door locks. I told them No Way!
I need key codes so I can get a key cut. Any suggestions?