ExploderWizard
Hero
Also, I think that running a module as a site in a sandbox game, still makes that a sandbox game. So just because you are running an AP does not necessarily mean that it is not a sandbox game.
To an extent yes. My current campaign is using a module for the beginning area of the campaign. Adventure elements from the module are also being used but the players are not limited to these. At any time they can decide to cease activities in the area and seek thier fortunes elsewhere. There is a difference between a module and an AP. A module contains content that can be used or ignored. An AP assumes A then B then C, etc. You can certainly use material from an AP in a sandbox game but if the players are not following the "path" then it becomes more like a module than an AP.