I used to come down 231 to get to PCB, but going through Enterprise and on to Highway 79 is MUCH easier, I've found, because you bypass Dothan and don't have to fight all the traffic in Panama City before you get to Panama City Beach. I believe you can save at least 45 minutes or more of drive time. There is a ton of roadwork near the bridge close to Panama City and it is definitely worth avoiding the huge headache of making your way through it. Plus, on Highway 79, you'll come out on the West side of the beaches. Even if you're staying on the east side on Thomas Drive, it'll still be worth your time to take this route. I've been driving to PCB for more than 20 years and it's never been easier than taking Highway 79 right now.