One related question I know Ham Radio Equptment is banned due to possible ship interfrence. Would that also apply to my CB walkie Talkies?
Check with the cruise line.
Also, radios rated as FRS are fine for cruising but if you use Grms rated
radios you do need a FCC GMRS license for operating in the US/US territories. GMRS radios look similar to Family Radio Service radios but have a greater range. Best bet is to make sure which you are buying.