We always use them. We can keep in touch with each other when we are seperated exploring the ship. When my wife is finished taking a nap she can just call me & we meet somewhere. We also take them along while we are on shore excursions, (my wife loves to shop & I like to visit the establishments that serve adult beverages). We've only once had anyone else on our same frequency
and or channel. We have radios that have 32 different channels. We were in Manzanillo Mexico, We herd someone speaking spanish a few times...I believe that they were Mexican Truckdrivers. So I just changed the channel to a clear freq.
We love anything assocated with crusing and traveling. We are retired U.S. Navy...and loving it, "Been there...done that"! (almost).
NCL Pride of America 12/2015
MS Carnival Glory 11/2010
MS Carnival Liberty 11/2007
MS Carnival Spirit 10/2006
MS Carnival Victory 12/2005
MS Star Princess 12/2002
MS Carnival Victory 12/2000
USS Bristol County, LST 1198, 1980-1982
USS Turner Joy, DD951, 1973-1978