Unfortunately farci, -1 from me. I recently made a booking with Ryanair. My mistake, I used the name by which my better half is known rather than that on her passport. As soon as the booking went through I realized my mistake and amended it straight away. Unfortunately, and despite my protestations and Ryanair's declared new fluffy 'we actually listen to our customers' approach to customer service, it still cost me an extra 110 Euros to do a name change myself.
I know it was my simple mistake, but I corrected it within 5 minutes, it was weeks before the flight and Ryanair were not involved in the process and it still cost me 110 Euros. Flight was good though but expensive!