Not necessarily - at least not when looking for a hotel/car deal.... you can enter your info in the Quick Search. Once your list of hotel/car choices appear, click on the 'I have a promo code' thats at the top left. Enter the code and click the 'refresh result' button. You should get this message: "Congratulations! Your promo code has been accepted. For eligible properties, your discount will be applied in the payment process." From there click on the car column of the hotel you want to look at. It will take you to the package and show that the $200 Orbitz discount was applied and the lower per night cost. If you want to look at another option on the list, just click the 'back to results' that's near the top right. You can click back and forth through as many of the hotel/car choices as you want without having to reenter the Orbitz code.
Just tried it and you are correct. I had not seen that option before.