I have got on Easyjet several times from Gatwick and never had a problem with boarding order or orderly queues- Speedy,Family,Disabled etc. Never had a problem coming back from Cologne,Paris, Barcelona or Madrid.
Is there some places where you should book speedy boarding because it is such a bun fight?
I just read another thread and some people have a dreadful boarding experience. Does it depend on the airports for not following procedure/allowing carnage ?