I booked one of the 5-night Barcelona round trips on Oasis (September 18 2014) as soon as they were available for CA members. It will be interesting to sail her in Europe!
The cruise was not cheap though, almost $4000 for a JS
for 2 people.
I think Allure is going into dry dock in fall 2015, so I guess one more chance to sail an Osais class here in Europe.
They are not going to be docked where they were built (in Helsinki, Finland) but in Rotterdam in the Netherlands.