If you are soliciting the idea to networks they are going to want more control. Including WHO is allowed in the house. Be prepared to hold firm or make adjustments.
It is a great idea and obviously the poker craze is in full effect in the states so I see it as a great segway to all the other reality shows. However, you need to look into the legality of it being "your" show and idea instead of being rejected and having a network do their own similar show.
Not sure how much research you have done on this, but you will need themes, character development and motivation, sub-plots, etc. It won't be enough to just take it to the network and say we have a bunch of drunk, partying, gamblers that want to be on tv.
Great idea - that I really think could catch on, but make sure you develop it completely.
- POB