He supported her decision 'without reservation'. [=he completely supported her decision]
My only 'reservation' about buying the car was its high price.
We made dinner 'reservations' at the restaurant for 6 o'clock.
(..) - Good evening. - Ah, good evening, sir. I'm here to meet some people. And do you have a reservation? Oh, it wouldn't be under my name. Do you know when it's for? - Are you Mr. Kreandator? (..)2008 Two Lovers