I've never bought the Key until just recently. The price for internet (multiple devices under one person) was only $3/day less than buying the Key. For us, the extra $21, or whatever, in total was worth it. Normally The Key "on Sale" is around $25/pp/pd, but we found it at ~$18 during one of the sales. Since Royal allows you to log-in and log-out , if one person wants to use multiple devices, they can.