Just because Croatia is joining the EU doesn't mean that it will adopt the Shengen accords. Great Britain is in the EU and hasn't adopted them.
For my boat, Dockwise will cost around $15K (U.S.) each way from Newport
or Fort Lauderdale
to Mallorca. It's a little more if you sail over on the Dockwise freighter, but then you don't have airfare.
You can get cheaper shipping
, but then you have to pay to step the mast
at your destination
. With Dockwise, the mast
stays up. You sail the boat on, and sail it off.
As for the off-season between December and April, we plan to park the boat and ski. We've skied France
and Switzerland, but never Austria, Maybe we can spend the Winter there.