I assume the come bets were $5 each. Under this assumption, you were actually making put bets, which you can do at any time, at any casino that allows them. Put bets are generally allowed in Nevada, and generally not allowed in Atlantic City. I normally don’t recommend put bets, because you skip the come out roll on the come bet, which has a 22.2% chance of winning, and only a 11.11% chance of losing. My advice is to start over with new come bets.