I just got back from Tenerife yesterday - we flew with Ryanair, almost 5 hours each way with 7month old and 5yr old - interesting to say the least!
We took pushchair right to plane steps both ways, and on the way back the pushchair was actually waiting for us at the plane steps when we got off! Mr S also wore him in Beco from gate to plane steps though as it meant we could get on and get seats a lot quicker. (He wore Austin and took some hand luggage - got on plane and got us seats, whilst I collapsed pushchair at plane steps, picked up rest of hand luggage and then made my way up slowly with Aliya. Had been advised to do this rather than pay the extra for priority boarding as if you have to get a bus to plane then priority isn't worth having.
Ryanair don't have any other types of boarding - just priority then the rest of you, so its not like Easyjet where children can board after the prioriity people, but before the rest of the passengers!
There is babychanging table above the toilet - very cramped, but still easier than changing a very tired 5yr old who managed to wet herself halfway home...<sigh>
Our flight out was fine, but on the way back the plane had no little pockets on the backs of the seats, so there was absolutely nowhere to store toys/muslins etc within easy reach. They are horrendously strict about only having 1 piece of handluggage per person (not baby though!) so make sure you put bags within bags (if that makes sense?). I had a large handluggage bag, but then a couple of smaller ones inside so that we could put a small chaning bag under the seat, and then another one with toys/snack as well.
Oh,and Austin's ears were fine, I fed him on takeoff and landing, and we had no problems!
Have fun!