It's just the dw and I, but we took a pair on the Glory last September...and they worked just fine. Never in the 7 days heard another conversation. We bought the Motorola 21 Mile set and had no probs. I like to get up early...dw likes to sleep in....this way she can catch up no problem. We plan on taking them this September on the Dream. One word of caution tho....I have read that it is not a good idea to use them on foreign soil. Countries have different regulations regarding radio frequncies and could lead to problems with the locals. Perfect to use on the ship.
Have a real fun cruise!!