Knowing that a person can sue, or take action, taking food out that's supposed to eaten there and there, and has to be kept refrigerated, I think that VA is trying to cover their own backs, by not "allowing" non grab and go items, to be taken out.
Supermarkets usually have a policy of unsold foods to be be given to charities, esp sandwiches etc.
Coles now has a quarter of an aisle for sandwiches, ie, grab and go, and it would have been a new thing, one was set up at my Coles about 18 months/24 months ago, prior to that, it was only frozen pies, pasties, cold meats, etc.
But wraps and sandwiches, thats quite new.
For the VA lounge tho, wonder who will keep an eye on people doing things like taking food out, ie, who would do the bag search.
Harder for those in ADL, as its open plan, but its easy to sneak things out, in MEL/SYD VAd lounges, as these have corners away from the staffed area.