Look in the app at the current and next sailing (not yours) - that info should be there and be close to what you can expect. The app should update with the info for your sailing much closer in.
Welcome to CC.
Not anymore.
There's only one tier of service - use it however you want.
Any package can be shared across as many devices as you want, within the limit of the package (one device package can only be used on one device at a time).