The pre-registration period for NC sports betting promos started on March 1 and will be available until the official launch of North Carolina online sportsbooks on March 11. Prospective bettors in North Carolina don't need to sweat the early sign-up process, as the impending NC online sportsbook operators make it very easy for new users to pre-register. In almost all cases, bonus bets must be used within 7-14 days of receipt.