I don't think anyone is talking about outright stealing wifi. Maybe some people are hoping to get away with paying for a somewhat less expensive package. I'm planning on doing this on my next cruise because I travel with multiple devices (phone, ipad, work laptop, etc.) even if I only use one at a time. I don't have the luxury at this point in my life of being unreachable. The job that affords me the income and flexibility to occasionally go on cruises also expects me to be available for a question or quick email if needed. On a cruise last year (not NCL) it was incredibly onerous to log out of one device and into another. It was a frustrating hassle and I spent more time than I wanted connecting to the internet for what I hoped would be a quick check in. For $40 I can (hopefully) have my devices connect more seamlessly, have a more relaxing trip with less irritation around the bad internet I paid a fortune for, and overall less time dealing with my devices. Is it possible that at some point my phone will still be downloading a podcast while I'm checking in with work and technically I had two devices connected for a few seconds. Maybe. I'm not going to lose any sleep over it, I don't think I'm looting Norwegian's coffers if it happens, and I don't think I'm violating the terms of what I paid for. But I certainly could be wrong and clearly other people will feel differently.