Are trip prizes free or paid?
For the Travelocity trips, I believe when Phil says, e.g.: "You have won a trip for two to Costa Rica! You can/will visit [listing beautiful experiences]", only plane tickets are free. Any additional packages like lodging and spas mentioned by Phil can also be complements.
Stuff like souvenirs, food, and other travel fares (taxi, rental car, bus) are costs on the travelers' behalf.