I just joined the Reddit cruising and FATcruises groups, and I am impressed by how informative and nice everybody is on the board. It's all about information sharing and being helpful to one another. I haven't come across the usual prima donnas with their ego trips and personal agendas who tend to monopolize and suck up all the oxygen on the Seabourn forum on cruise critic, for example.

I only use the app Shipmate where you have access to excursions, who is sailing on the same ship with you, recent photos, questions and chats and they have private messages.