I have at least a dozen of these mugs from the CR, CS, and the POR. We use our really old ones as pen and pencil cups at home.
However, no one at the resorts is going to bother you if you re-use old ones. And, I for one am glad that's the way it is. When I go to WDW, I don't want to hear either CMs or fellow guests chastising other guests for using old mugs.
However, no one at the resorts is going to bother you if you re-use old ones. And, I for one am glad that's the way it is. When I go to WDW, I don't want to hear either CMs or fellow guests chastising other guests for using old mugs.

. They make great commuter mugs and always remind me of our great trips.