The Express-Times – Slipping into the casino to gamble while underage might seem a harmless adventure, but it’s likely you won’t walk away with any big winnings, Pennsylvania Gaming Control Board spokesman Doug Harbach says. An underage visitor might instead be walking away with a criminal record. That could be the fate awaiting Rong Lin, 20, of Fresh Meadows, N.Y., after police determined Wednesday evening he had a fake ID after he’d won a jackpot at a Sands Casino Resort Bethlehem slot machine. Police and gaming officials say they don’t know the precise size of the jackpot which ended up giving away…