You 've got to bear in mind
that Etihad do not fly to Dubai, only Abu Dhabi. If you're flying economy you'll have to catch a (free) coach to DXB (I think it's about an hour and a half), in biz and first there's limo service. I've got a flight on them on Friday and will try and report back with experiences, even if I'm flying in C so some of it will probably not be much help to you.