Has anyone used walkie talkies at WDW? I'm thinking of getting one in the event that my dh and I separate (which seems iinevitable with 2 little ones). We're from Canada and using our cell phones won't be an option as the roaming charges and LD $$ will be way too high. I'm looking at a Cobra or Mototola walkie talkies with a wide range and high number of channels and frequencies. But do they work???