Why are you mostly calling hotels? There's nothing on the Rambo soundboard that'll actually let you make a reservation or talk properly to the people like the Jack Nicholson soundboards do, you know they're just gonna ask "Would you like to make a reservation?" then as soon as Rambo starts mumbling they're just going to put the phone down.
I'm not trying to be an ass, sorry if it's coming across that way, but maybe you should look through the phonebook for some guy called Ray, then phone him and use the Vietnam line and see where you go with that?