Tire pressure makes a difference.
Over the years we have found that tire pressure really does make a difference when enjoying your 3" plus tires on the beach or area's sugar sand. Having tested numerous different tire widths and tread patterns on the sand we have come to conclude that a person weighing around 180 will roll faster and have better traction at 8psi. There are of course variables, your body weight, wether or not you are running tubeless, your tire width, your goals etc. But we have found that running a 4.6" tire on the sand at 7-9psi gives the best feeling of fun. Pressure over 8 on the sand will tend to dig into the sand and make the rolling resistance higher. While this is not terrible, it can make the ride more of a workout.
On the road or a gravel event running the same tires at 12psi will give you a totally different feeling. Higher pressure on pure road, cross city trail or gravel rides or excursions will allow you to have a bit less tread touching the pavement which may lead to better handling for the hard pack.
Stop by the shop to see how we have learned to make our FatBoy treads even more efficient on all of our local places to ride.