Re Group A and B etc on EZY - I think they have [or are about to] abandon the concept of letting those who check in on line board ahead of those who don't.
I went to Nice Sunday and returned today and my on line booking said Boarding group 2.The young lady checking us through said that all non Speedy Boarders and those without children are now 'equal' as it were.
Why can't they just allocate seats, and if passengers insist on sitting somewhere specific - charge them for it ?