We've just booked a family holiday to Spain with first choice for myself DH and DD3, DD3 do you think I'll be OK not paying extra for seat selection? I'm prepared to be split up in two blocks of two but surely they'll sit a 3yr next to their accompanying adult rather than say the seat in front? I'd pay to sit together if the kids were older but my logic is they won't split really young kids into a seat on their own?