SydBarrett - I'm not sure which country you're in but you may have just missed it. I believe the food service stopped here in the UK in the early '90s, and charging for literature shortly after that. Not sure about the US, but presumably around the same time as I guess it was a global change.
Definitely by the late '90s when I was around, that had all stopped. It was just something I heard about anecdotally. I remember literature desks and distribution at conventions, but no food distribution and no charging for literature anywhere, although we still had a list at the hall which had 'suggested' donations for main items eg: Bibles, mags, etc. It was around that time they kept drumming into us to tell householders the literature was offered "without charge" NOT "free", because there was still a cost to produce it! 🙄
I used to hate being given cash contributions because of the hassle of having to remember to take them with you to the next meeting and drop them in the box. At least now it's easier that they don't accept cash from the ministry, and publishers are not expected to mention donations. Downside is all the begging for money is on the congregations themselves now, of course!