On our Seaside cruise, I purchased one so that I could leave my card in the power slot by the door. I was usually the one opening the cabin door so my card went there. I am an early riser, my sister was seldom out of bed before noon unless we had an excursion. If I needed to take my card, I would have to hunt hers to replace mine, or leave her in the dark…so the bracelet was handy. I bought one again on my solo Seaside cruise, it didn’t bother on Seashore.
Just a note: if you are doing a B2B and staying in the same cabin or same muster area, you can have the bracelet reprogrammed for the new cabin or dates. EM