I have been told by other mods when being staff etc, that eating food outside someones base is a raid action and counts as one. Same as setting up deployable shields to defend from being killed from raiders outside the base. This means then I could set up a TON of deployable shields so that the people outside trying to protect wouldnt be able to break them all until i start lockpicking the door etc.
All in all I have seen many staff say that eating food outside a base counts as a raid action.