On a recent 7 day cruise aboard the Discovery, up and down the California coast I didn’t buy the internet package since it was only 2 sea days and I would have internet in SF, SD and Ensenada. I was under the impression that iMessage would work on MedallionNet without internet. I thought I experienced this before but unsure if it was on the 5 PCL and RCCL cruises I’ve taken in the last 2.5 years. I inquired at the IT desk and was told it’s not possible without internet. The tall, RUDE internet lady could only offer to sign me up for internet, that’s it, ie. to stop wasting her time. It wasn’t that critical to me but curious if you actually need full internet to iMessage. What I’ve read on this forum seems mixed.
BTW, the chat feature on MedallionNet is worthless without a notification feature.