Sportsbook in Venetian/palazzo said they would take up too 100,000 on a cfb or nfl side with out hesitating. Just ask for SSN to assure you aren't on a terrorist watch list and of course your ID.
If if you win you can mail or fly back to collect, which I knew.
By by the way, spoke with other books also and they didn't mind taking the wager. Of those the mgm, Paris, New York and a couple others. One did make a comment about over 15,000 but don't remember it.