We have been to Ailani four times and are going back again in May. We always being back our old mugs from the first year. The staff has seen us use them and commented...oh you still have the original ones! Lucky you.
So sorry but I don't feel the least bit guilty using them. And we will continue to use them until someone tells us not to or they get the ones with a chip. Then we will buy them again every time like we do at DW now.