Don't know if everyone has heard but the Thunderbolt Express went bankrupt.
The other ferry to Belize City is still running.

The local Island Ferry cost just went up as well and is now $10.00BZ one way even for the locals who used to pay $5.00BZ.

I fly TACA and the departure tax was included in my ticket, and just returned on the 3rd of March.
Kat