Yes, you can use one internet package for multiple devices, but you can connect only one device at a time to the Wi-Fi. On our Norwegian Bliss cruise, we could use one internet package on our phone and laptop. Once I finished surfing the web on my laptop, Victoria connected her phone to the Wi-Fi. It's important to remember that you can connect only one device at a time per internet plan. So, when you connect a new device, it will disconnect the previous device. This is a great trick to save money if you don't need a constant internet connection throughout the cruise.