I worked at Crown for a year but not as a dealer (I was an "talent supervisor" on the gaming floor ie. I looked after the girls in sparkly outfits who dance on a little stage every hour or so, they don't do it anymore I think.) So I probably can't tell you too much specific except what I heard on the floor.
The training is indeed excellent and you get paid for every hour you have to be in the building. First aid training, all your dealer training (you'll specialise in 1 or 2 games, the training is about a month full time IIRC).
Personally I found the gaming floor a really really depressing place to work but if you're into that stuff and/or can block it out then you'll probably be OK. Obviously it's a lot of being on your feet but they are absolutely religious with breaks for the croupiers, I think you take 15 minutes every hour. The staff restaurant is just above the main gaming floor at Crown so that's where you go. You get one free meal per day from the restaurant but that food gets old FAST!
I don't know if you are allowed to play at the Casino off-shift for sure but I think NO is the answer, I can't remember 100% but I know we did have a conversation about it at one point.
Crown is, as an employer, very good. I was offered all sorts of promotional opportunities and shit. I think if you are there long term and are good at what you do, they notice. You will start on the normal gaming floor and if you show potential and commitment you can get promoted to high roller rooms etc. I was paid well, I think it was like $28/hr with double time on public holidays and sundays and all that standard stuff. Don't know about croupier wage.
I got my job through someone I had worked with outside of Crown but I was only casual. I think they generally advertise on their website and in newspapers like The Age, mostly. They are, I believe, almost always looking for hospo and gaming floor staff though. They have a high turnover as the working environment doesn't gel well with a lot of people once they are actually in it (quite a few have issues with supporting the gambling industry blah blah blah but as I say if you're already into it isn't probably not a problem).
Sorry I can't be more specific.