We've just been scammed at Budapest airport by wizz air. In line with their procedures we check in the night before but it wouldn't allow us to check in the DC as it would accept DOB's later than 2005. We were then charged £50 to check them in at the airport even though we'd checked ourselves in. I went in to look at reviews in tripadvisor and it's full of complaints. I advise you very carefully to check their t&c's as they have a tendency to change