I'm a 2..although I do recognize the signage has changed (several times) since I bought them. No signage when I first bought them..and just the usual CM telling me good forever. But even though some of the signage has changed, each trip I hear the CM's at the register telling the customer they can be brought back. It was just last year that I heard for the first time, at POR, a customer being told they were good everywhere. I posted at that time, that the bigwigs were there talking about the future of POR, and I asked..and they said they really didn't care one way or another.
I did see last Fall, a sign at AllStar Sports saying length of current trip, both on the wall and over the drinks. However, when I went to take a picture in April..both were gone. By the elevators was an old sign..and it just mentioned they were refillable..that was the sign they used to have in the cafeteria.
To feel guilt free each visit (although it's only on this board that any thought that I should feel guilty comes up..and actually those against it think I SHOULD feel guilty..but I don't...since I know what I was told. I do ask the food court manager. If they OK it, it's good enough for me. So far none have said no, but if they did, I would buy a new mug. I would feel guilty if I refilled non resort mugs, and paper cups..since I was never told that was OK.
If Disney is now putting on the mugs the date and the statement when the mugs can be used, it looks like the old mugs will eventually die out, and we'll all go by what I consider "the new rules". Looks like that's how Disney is handling it..but so far, it seems the old mugs are grandfathered in.