G,Day Miko.
Mate Vacu packed meat / cooked meals etc are fine, though usualy eaten first week [ would freeze these though ]..
We vacu pack bag our own and pre freeze it in flat packs [ but dont have too ], placed into the bottom of the 12v fridge [ pre chilled] for the trip, raw stir fry chicken strips etc , for crumbed stuff just individualy wrap it then vacu bag and freeze, raw red meats... no troubles with freshness [ even if frozen and then thawed ] up to 14 days on our Fraser trips ...Waeco 50 lt set on about 4* C ..