Padmeister & Mikey,

Thank you, you both make very eloquent points and ones I will think about. Paddy, you're right, I would have paid the extra £360 at the time of booking the flights, put like that, it's a bit of a no-brainer.

I might take a look in MMB to see how much the cabin is filling up, after all, CUN is a leisure route for us and we go right at the start of the school holidays.

Now to pursuade the hubster to part with another £360