We had some, but my father kept his turned off so he "wouldn't waste the batteries". That is true, but no one could get him either! I did see families actually using them and they seemed to work great. You should get the ones with a couple of channels at least, because a lot of people use them. You could also bring post it notes and have everyone go back to the room and leave a note as to where they would be. That seems to work for a lot of families too.