Why not call the casino ahead of time, and see what arrangements they can make for you?
Back in 93, I took a large sum to Vegas, but did it by having a cashiers check made out to me, and the hotel casino I was staying at. I then just told them to credit my account, after endorsing the check, which they did, then I drew markers as needed against the account.
Any wins after a session at the tables, I'd just have them credit my account. When we checked out, I was up by about $12k, so I had them cut me a check.