I’ve booked priority so I can take an extra bag onboard. I would like that ‘bag’ to be a travel pushchair for my baby. It fits the IATA standard but is 3cm over Ryanair’s 20cm. Is the sizer exact? I presume if it’s picked up as oversized then it can simply go in the hold as a free baby item but I would much rather have it with me in the cabin so I can use it straight away and not risk it being returned after security.

Second question: if I’ve paid priority for me, do I also have to pay for priority for my 2 year old (who will not have a priority sized bag)?