I've booked my flight but now four of us going so we are off on the ferry. I don't know about changing names, would imagine Ryanair will charge a lot but if anyone is struggling, here are the flight details. Free to anyone that wants it. Of course you will have to pay for name change
To Dortmund : FR1788
DEPART: London (Stansted) (STN)
DATE: Wed 06 Apr 2016
TIME: 13:00
ARRIVAL: Dortmund (DTM)
DATE: Wed 06 Apr 2016
TIME: 15:20
From Dortmund : FR1789
DEPART: Dortmund (DTM)
DATE: Fri 08 Apr 2016
TIME: 15:45
ARRIVAL: London (Stansted) (STN)
DATE: Fri 08 Apr 2016
TIME: 16:05