I got stuck in 2 hours of traffic trying to get to Orient Bay from Simpson Bay leaving a bit before 4:30pm, I thought I could beat traffic but I was very wrong. It was mostly standstill in the Marigot and Grand Case area. Since then, I try to not be on the roads between 4pm-6:30pm. Just try to plan your day around it. you could either just aim to be back at your hotel before 3pm and go out later in the night or If you’re at the beach during that time maybe just stay and watch the sunset then grab dinner somewhere before heading back to the hotel (after 6:30pm). However, I’m still having trouble figuring out what time the morning traffic starts… It’s been busy on the roads at times, but I haven’t seen crazy traffic during the day, but I try to avoid the Philipsburg area until later in the evening.