This App exists because browsing the Carnival Funville forum on the phone was too painful (there does not appear to be a mobile version).
Well, it worked well enough on my last cruise that we stopped carrying our walkie talkies. It was a real pain to carry the phone (for music and games for my kid) and a walkie talkie. So, this was useful.
How to use:
1. Create a new forum thread (probably in the Currently Onboard subforum)
2. Type its thread ID into App Settings
To find the thread ID: browse the thread and copy the 6-digit number just before ".aspx" from the URL.
For example, given the following URL
The thread ID is "396125".
3. Make sure everybody is on the same thread ID